diff --git a/COPYING b/COPYING
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--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.md b/README.md
index ef7fd1af..8a11c15b 100644
--- a/README.md
+++ b/README.md
@@ -63,4 +63,6 @@ forge script script/Deploy.s.sol --rpc-url $SEPOLIA_RPC_URL --broadcast
 
 The Modular Account libraries (i.e., all code inside the [src/libraries](src/libraries) directory) is licensed under the MIT License, also included in our repository in [src/libraries/LICENSE](src/libraries/LICENSE).
 
+All other code for Modular Account is licensed under the GNU General Public License v3.0, also included in our repository in [COPYING](COPYING).
+
 Alchemy Insights, Inc., 548 Market St., PMB 49099, San Francisco, CA 94104; legal@alchemy.com
diff --git a/script/Deploy.s.sol b/script/Deploy.s.sol
index 939f3643..18e6dcb3 100644
--- a/script/Deploy.s.sol
+++ b/script/Deploy.s.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {console} from "forge-std/Test.sol";
diff --git a/src/account/AccountExecutor.sol b/src/account/AccountExecutor.sol
index bbfbd305..ace020c2 100644
--- a/src/account/AccountExecutor.sol
+++ b/src/account/AccountExecutor.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ERC165Checker} from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
diff --git a/src/account/AccountLoupe.sol b/src/account/AccountLoupe.sol
index 5534951a..0e6b3a51 100644
--- a/src/account/AccountLoupe.sol
+++ b/src/account/AccountLoupe.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {AccountStorageV1} from "../account/AccountStorageV1.sol";
diff --git a/src/account/AccountStorageInitializable.sol b/src/account/AccountStorageInitializable.sol
index 2230a989..23eb67ca 100644
--- a/src/account/AccountStorageInitializable.sol
+++ b/src/account/AccountStorageInitializable.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: MIT
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Address} from "@openzeppelin/contracts/utils/Address.sol";
diff --git a/src/account/AccountStorageV1.sol b/src/account/AccountStorageV1.sol
index ceefd78c..f6c38f8b 100644
--- a/src/account/AccountStorageV1.sol
+++ b/src/account/AccountStorageV1.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {IPlugin} from "../interfaces/IPlugin.sol";
diff --git a/src/account/PluginManagerInternals.sol b/src/account/PluginManagerInternals.sol
index d8d3585c..b1abe5cf 100644
--- a/src/account/PluginManagerInternals.sol
+++ b/src/account/PluginManagerInternals.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ERC165Checker} from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
diff --git a/src/account/UpgradeableModularAccount.sol b/src/account/UpgradeableModularAccount.sol
index 5bb9488f..b92e94e7 100644
--- a/src/account/UpgradeableModularAccount.sol
+++ b/src/account/UpgradeableModularAccount.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
diff --git a/src/factory/MultiOwnerMSCAFactory.sol b/src/factory/MultiOwnerMSCAFactory.sol
index 47a76915..b1a2e368 100644
--- a/src/factory/MultiOwnerMSCAFactory.sol
+++ b/src/factory/MultiOwnerMSCAFactory.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";
diff --git a/src/factory/MultiOwnerTokenReceiverMSCAFactory.sol b/src/factory/MultiOwnerTokenReceiverMSCAFactory.sol
index d204bd1a..44925079 100644
--- a/src/factory/MultiOwnerTokenReceiverMSCAFactory.sol
+++ b/src/factory/MultiOwnerTokenReceiverMSCAFactory.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";
diff --git a/src/helpers/CastLib.sol b/src/helpers/CastLib.sol
index 0e424ae8..04e32450 100644
--- a/src/helpers/CastLib.sol
+++ b/src/helpers/CastLib.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {SetValue} from "../libraries/Constants.sol";
diff --git a/src/helpers/FactoryHelpers.sol b/src/helpers/FactoryHelpers.sol
index 7f53870c..cdbaab9b 100644
--- a/src/helpers/FactoryHelpers.sol
+++ b/src/helpers/FactoryHelpers.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 library FactoryHelpers {
diff --git a/src/helpers/FunctionReferenceLib.sol b/src/helpers/FunctionReferenceLib.sol
index 5f5e5466..e77e3a09 100644
--- a/src/helpers/FunctionReferenceLib.sol
+++ b/src/helpers/FunctionReferenceLib.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {FunctionReference} from "../interfaces/IPluginManager.sol";
diff --git a/src/helpers/KnownSelectors.sol b/src/helpers/KnownSelectors.sol
index 6c5efc39..77e48052 100644
--- a/src/helpers/KnownSelectors.sol
+++ b/src/helpers/KnownSelectors.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {UUPSUpgradeable} from "../../ext/UUPSUpgradeable.sol";
diff --git a/src/helpers/ValidationDataHelpers.sol b/src/helpers/ValidationDataHelpers.sol
index ba9a3630..7cf75da9 100644
--- a/src/helpers/ValidationDataHelpers.sol
+++ b/src/helpers/ValidationDataHelpers.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {SIG_VALIDATION_FAILED} from "../libraries/Constants.sol";
diff --git a/src/plugins/BasePlugin.sol b/src/plugins/BasePlugin.sol
index e873e596..c9239819 100644
--- a/src/plugins/BasePlugin.sol
+++ b/src/plugins/BasePlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ERC165} from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
diff --git a/src/plugins/TokenReceiverPlugin.sol b/src/plugins/TokenReceiverPlugin.sol
index a1e3b033..d4e528c2 100644
--- a/src/plugins/TokenReceiverPlugin.sol
+++ b/src/plugins/TokenReceiverPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {IERC1155Receiver} from "@openzeppelin/contracts/interfaces/IERC1155Receiver.sol";
diff --git a/src/plugins/owner/IMultiOwnerPlugin.sol b/src/plugins/owner/IMultiOwnerPlugin.sol
index 37d24775..edfe138b 100644
--- a/src/plugins/owner/IMultiOwnerPlugin.sol
+++ b/src/plugins/owner/IMultiOwnerPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {UserOperation} from "../../interfaces/erc4337/UserOperation.sol";
diff --git a/src/plugins/owner/MultiOwnerPlugin.sol b/src/plugins/owner/MultiOwnerPlugin.sol
index fe72aa58..ff9a6d69 100644
--- a/src/plugins/owner/MultiOwnerPlugin.sol
+++ b/src/plugins/owner/MultiOwnerPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {IERC1271} from "@openzeppelin/contracts/interfaces/IERC1271.sol";
diff --git a/src/plugins/session/ISessionKeyPlugin.sol b/src/plugins/session/ISessionKeyPlugin.sol
index bb7cd040..2c2228e9 100644
--- a/src/plugins/session/ISessionKeyPlugin.sol
+++ b/src/plugins/session/ISessionKeyPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {UserOperation} from "../../interfaces/erc4337/UserOperation.sol";
diff --git a/src/plugins/session/SessionKeyPlugin.sol b/src/plugins/session/SessionKeyPlugin.sol
index b2b28495..7960b3f8 100644
--- a/src/plugins/session/SessionKeyPlugin.sol
+++ b/src/plugins/session/SessionKeyPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
diff --git a/src/plugins/session/permissions/ISessionKeyPermissionsUpdates.sol b/src/plugins/session/permissions/ISessionKeyPermissionsUpdates.sol
index aec02143..b6d63c92 100644
--- a/src/plugins/session/permissions/ISessionKeyPermissionsUpdates.sol
+++ b/src/plugins/session/permissions/ISessionKeyPermissionsUpdates.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ISessionKeyPlugin} from "../ISessionKeyPlugin.sol";
diff --git a/src/plugins/session/permissions/SessionKeyPermissions.sol b/src/plugins/session/permissions/SessionKeyPermissions.sol
index dbfa56a7..6adbedff 100644
--- a/src/plugins/session/permissions/SessionKeyPermissions.sol
+++ b/src/plugins/session/permissions/SessionKeyPermissions.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
diff --git a/src/plugins/session/permissions/SessionKeyPermissionsBase.sol b/src/plugins/session/permissions/SessionKeyPermissionsBase.sol
index 5519944b..ba9bd955 100644
--- a/src/plugins/session/permissions/SessionKeyPermissionsBase.sol
+++ b/src/plugins/session/permissions/SessionKeyPermissionsBase.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {PluginStorageLib, StoragePointer} from "../../../libraries/PluginStorageLib.sol";
diff --git a/src/plugins/session/permissions/SessionKeyPermissionsLoupe.sol b/src/plugins/session/permissions/SessionKeyPermissionsLoupe.sol
index 850e2106..7c1c5910 100644
--- a/src/plugins/session/permissions/SessionKeyPermissionsLoupe.sol
+++ b/src/plugins/session/permissions/SessionKeyPermissionsLoupe.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ISessionKeyPlugin} from "../ISessionKeyPlugin.sol";
diff --git a/test/TestUtils.sol b/test/TestUtils.sol
index 96266376..87d79ab1 100644
--- a/test/TestUtils.sol
+++ b/test/TestUtils.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test, console} from "forge-std/Test.sol";
diff --git a/test/Utils.sol b/test/Utils.sol
index e5297452..5609d1fd 100644
--- a/test/Utils.sol
+++ b/test/Utils.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 library Utils {
diff --git a/test/account/AccountExecHooks.t.sol b/test/account/AccountExecHooks.t.sol
index e3ae71e1..692d2160 100644
--- a/test/account/AccountExecHooks.t.sol
+++ b/test/account/AccountExecHooks.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/AccountLoupe.t.sol b/test/account/AccountLoupe.t.sol
index 2b5ca631..3e9b1814 100644
--- a/test/account/AccountLoupe.t.sol
+++ b/test/account/AccountLoupe.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/AccountPreValidationHooks.t.sol b/test/account/AccountPreValidationHooks.t.sol
index 9c49e6a4..103c66da 100644
--- a/test/account/AccountPreValidationHooks.t.sol
+++ b/test/account/AccountPreValidationHooks.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/AccountReturnData.t.sol b/test/account/AccountReturnData.t.sol
index 4e27426c..4467663e 100644
--- a/test/account/AccountReturnData.t.sol
+++ b/test/account/AccountReturnData.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/AccountStorage.t.sol b/test/account/AccountStorage.t.sol
index 33091a04..c02c0cb5 100644
--- a/test/account/AccountStorage.t.sol
+++ b/test/account/AccountStorage.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/ExecuteFromPluginPermissions.t.sol b/test/account/ExecuteFromPluginPermissions.t.sol
index f540e8b9..be9a67be 100644
--- a/test/account/ExecuteFromPluginPermissions.t.sol
+++ b/test/account/ExecuteFromPluginPermissions.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test, console} from "forge-std/Test.sol";
diff --git a/test/account/ManifestValidity.t.sol b/test/account/ManifestValidity.t.sol
index 116a4022..1ea54f17 100644
--- a/test/account/ManifestValidity.t.sol
+++ b/test/account/ManifestValidity.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/UpgradeableModularAccount.t.sol b/test/account/UpgradeableModularAccount.t.sol
index f28729a6..37f64085 100644
--- a/test/account/UpgradeableModularAccount.t.sol
+++ b/test/account/UpgradeableModularAccount.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test, console} from "forge-std/Test.sol";
diff --git a/test/account/UpgradeableModularAccountPluginManager.t.sol b/test/account/UpgradeableModularAccountPluginManager.t.sol
index e96263c1..a5e24733 100644
--- a/test/account/UpgradeableModularAccountPluginManager.t.sol
+++ b/test/account/UpgradeableModularAccountPluginManager.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/ValidationIntersection.t.sol b/test/account/ValidationIntersection.t.sol
index 7c3214fb..6a71577f 100644
--- a/test/account/ValidationIntersection.t.sol
+++ b/test/account/ValidationIntersection.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/phases/AccountStatePhases.t.sol b/test/account/phases/AccountStatePhases.t.sol
index eebdbf16..0abc9e63 100644
--- a/test/account/phases/AccountStatePhases.t.sol
+++ b/test/account/phases/AccountStatePhases.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/account/phases/AccountStatePhasesExec.t.sol b/test/account/phases/AccountStatePhasesExec.t.sol
index 07551e78..0bfeb126 100644
--- a/test/account/phases/AccountStatePhasesExec.t.sol
+++ b/test/account/phases/AccountStatePhasesExec.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {
diff --git a/test/account/phases/AccountStatePhasesRTValidation.t.sol b/test/account/phases/AccountStatePhasesRTValidation.t.sol
index f572baaf..f61f244e 100644
--- a/test/account/phases/AccountStatePhasesRTValidation.t.sol
+++ b/test/account/phases/AccountStatePhasesRTValidation.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {UpgradeableModularAccount} from "../../../src/account/UpgradeableModularAccount.sol";
diff --git a/test/account/phases/AccountStatePhasesUOValidation.t.sol b/test/account/phases/AccountStatePhasesUOValidation.t.sol
index e0e79d7d..88e6b57a 100644
--- a/test/account/phases/AccountStatePhasesUOValidation.t.sol
+++ b/test/account/phases/AccountStatePhasesUOValidation.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {AccountStatePhasesTest} from "./AccountStatePhases.t.sol";
diff --git a/test/comparison/CompareSimpleAccount.t.sol b/test/comparison/CompareSimpleAccount.t.sol
index e48c2d3e..0e7945a3 100644
--- a/test/comparison/CompareSimpleAccount.t.sol
+++ b/test/comparison/CompareSimpleAccount.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/factory/MultiOwnerMSCAFactoryTest.t.sol b/test/factory/MultiOwnerMSCAFactoryTest.t.sol
index 07628e3f..a47f7f6f 100644
--- a/test/factory/MultiOwnerMSCAFactoryTest.t.sol
+++ b/test/factory/MultiOwnerMSCAFactoryTest.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/factory/MultiOwnerTokenReceiverFactoryTest.t.sol b/test/factory/MultiOwnerTokenReceiverFactoryTest.t.sol
index d771ca33..71eccacb 100644
--- a/test/factory/MultiOwnerTokenReceiverFactoryTest.t.sol
+++ b/test/factory/MultiOwnerTokenReceiverFactoryTest.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/helpers/FunctionReferenceLib.t.sol b/test/helpers/FunctionReferenceLib.t.sol
index e72dcb41..f30f3fe7 100644
--- a/test/helpers/FunctionReferenceLib.t.sol
+++ b/test/helpers/FunctionReferenceLib.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/helpers/KnownSelectors.t.sol b/test/helpers/KnownSelectors.t.sol
index 978e3dbd..f8db7dc9 100644
--- a/test/helpers/KnownSelectors.t.sol
+++ b/test/helpers/KnownSelectors.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/invariant/AssociatedLinkedListSetLibInvariants.t.sol b/test/invariant/AssociatedLinkedListSetLibInvariants.t.sol
index a0208cde..cfe6a75f 100644
--- a/test/invariant/AssociatedLinkedListSetLibInvariants.t.sol
+++ b/test/invariant/AssociatedLinkedListSetLibInvariants.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/invariant/LLSLRepro.t.sol b/test/invariant/LLSLRepro.t.sol
index 6d9984c5..518d4c52 100644
--- a/test/invariant/LLSLRepro.t.sol
+++ b/test/invariant/LLSLRepro.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/invariant/LinkedListSetLibInvariants.t.sol b/test/invariant/LinkedListSetLibInvariants.t.sol
index b6787cfd..fd8243fd 100644
--- a/test/invariant/LinkedListSetLibInvariants.t.sol
+++ b/test/invariant/LinkedListSetLibInvariants.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/invariant/handlers/AssociatedLinkedListSetHandler.sol b/test/invariant/handlers/AssociatedLinkedListSetHandler.sol
index ffbec216..f3814a8c 100644
--- a/test/invariant/handlers/AssociatedLinkedListSetHandler.sol
+++ b/test/invariant/handlers/AssociatedLinkedListSetHandler.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {CommonBase} from "forge-std/Base.sol";
diff --git a/test/invariant/handlers/LinkedListSetHandler.sol b/test/invariant/handlers/LinkedListSetHandler.sol
index a3d59bc4..56b34dac 100644
--- a/test/invariant/handlers/LinkedListSetHandler.sol
+++ b/test/invariant/handlers/LinkedListSetHandler.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {CommonBase} from "forge-std/Base.sol";
diff --git a/test/libraries/AssociatedLinkedListSetLib.t.sol b/test/libraries/AssociatedLinkedListSetLib.t.sol
index 748081f4..3930ad1f 100644
--- a/test/libraries/AssociatedLinkedListSetLib.t.sol
+++ b/test/libraries/AssociatedLinkedListSetLib.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/libraries/CountableLinkedListSetLib.t.sol b/test/libraries/CountableLinkedListSetLib.t.sol
index 0c57faae..d7ead39b 100644
--- a/test/libraries/CountableLinkedListSetLib.t.sol
+++ b/test/libraries/CountableLinkedListSetLib.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/libraries/LinkedListSetLib.t.sol b/test/libraries/LinkedListSetLib.t.sol
index 73a39b95..8c89540b 100644
--- a/test/libraries/LinkedListSetLib.t.sol
+++ b/test/libraries/LinkedListSetLib.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/libraries/PluginStorageLib.t.sol b/test/libraries/PluginStorageLib.t.sol
index 8640b407..5ae19e81 100644
--- a/test/libraries/PluginStorageLib.t.sol
+++ b/test/libraries/PluginStorageLib.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/mocks/ContractOwner.sol b/test/mocks/ContractOwner.sol
index 35704e19..9a639249 100644
--- a/test/mocks/ContractOwner.sol
+++ b/test/mocks/ContractOwner.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {IERC1271} from "@openzeppelin/contracts/interfaces/IERC1271.sol";
diff --git a/test/mocks/Counter.sol b/test/mocks/Counter.sol
index 3ee416bb..b2eb37d9 100644
--- a/test/mocks/Counter.sol
+++ b/test/mocks/Counter.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 /// @title A public counter for anyone to use.
diff --git a/test/mocks/Counter.t.sol b/test/mocks/Counter.t.sol
index 70f98df7..5c8f5147 100644
--- a/test/mocks/Counter.t.sol
+++ b/test/mocks/Counter.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/mocks/MockDiamondStorageContract.sol b/test/mocks/MockDiamondStorageContract.sol
index e71e4379..428f604a 100644
--- a/test/mocks/MockDiamondStorageContract.sol
+++ b/test/mocks/MockDiamondStorageContract.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {AccountStorageInitializable} from "../../src/account/AccountStorageInitializable.sol";
diff --git a/test/mocks/MockPlugin.sol b/test/mocks/MockPlugin.sol
index 3d7e4260..94ccfa3b 100644
--- a/test/mocks/MockPlugin.sol
+++ b/test/mocks/MockPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ERC165} from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
diff --git a/test/mocks/plugins/AccountStateMutatingPlugin.sol b/test/mocks/plugins/AccountStateMutatingPlugin.sol
index 1480d91d..6bf14797 100644
--- a/test/mocks/plugins/AccountStateMutatingPlugin.sol
+++ b/test/mocks/plugins/AccountStateMutatingPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {UserOperation} from "../../../src/interfaces/erc4337/UserOperation.sol";
diff --git a/test/mocks/plugins/BadTransferOwnershipPlugin.sol b/test/mocks/plugins/BadTransferOwnershipPlugin.sol
index 27a5e07f..a8b52050 100644
--- a/test/mocks/plugins/BadTransferOwnershipPlugin.sol
+++ b/test/mocks/plugins/BadTransferOwnershipPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {
diff --git a/test/mocks/plugins/BaseTestPlugin.sol b/test/mocks/plugins/BaseTestPlugin.sol
index cb28d43d..33c26fa6 100644
--- a/test/mocks/plugins/BaseTestPlugin.sol
+++ b/test/mocks/plugins/BaseTestPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {PluginMetadata} from "../../../src/interfaces/IPlugin.sol";
diff --git a/test/mocks/plugins/ChangingManifestPlugin.sol b/test/mocks/plugins/ChangingManifestPlugin.sol
index 7c798869..58abcf8a 100644
--- a/test/mocks/plugins/ChangingManifestPlugin.sol
+++ b/test/mocks/plugins/ChangingManifestPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ERC1967Proxy} from "@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol";
diff --git a/test/mocks/plugins/ComprehensivePlugin.sol b/test/mocks/plugins/ComprehensivePlugin.sol
index 471ecf4a..9671e17e 100644
--- a/test/mocks/plugins/ComprehensivePlugin.sol
+++ b/test/mocks/plugins/ComprehensivePlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {UserOperation} from "../../../src/interfaces/erc4337/UserOperation.sol";
diff --git a/test/mocks/plugins/ExecFromPluginPermissionsMocks.sol b/test/mocks/plugins/ExecFromPluginPermissionsMocks.sol
index 3db37e36..27b44c62 100644
--- a/test/mocks/plugins/ExecFromPluginPermissionsMocks.sol
+++ b/test/mocks/plugins/ExecFromPluginPermissionsMocks.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {
diff --git a/test/mocks/plugins/ManifestValidityMocks.sol b/test/mocks/plugins/ManifestValidityMocks.sol
index 1cb17ee3..30990a67 100644
--- a/test/mocks/plugins/ManifestValidityMocks.sol
+++ b/test/mocks/plugins/ManifestValidityMocks.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {
diff --git a/test/mocks/plugins/ReturnDataPluginMocks.sol b/test/mocks/plugins/ReturnDataPluginMocks.sol
index a1cc4da7..2d25a3fd 100644
--- a/test/mocks/plugins/ReturnDataPluginMocks.sol
+++ b/test/mocks/plugins/ReturnDataPluginMocks.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {
diff --git a/test/mocks/plugins/UninstallErrorsPlugin.sol b/test/mocks/plugins/UninstallErrorsPlugin.sol
index 60731795..c9448c28 100644
--- a/test/mocks/plugins/UninstallErrorsPlugin.sol
+++ b/test/mocks/plugins/UninstallErrorsPlugin.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {StorageSlot} from "@openzeppelin/contracts/utils/StorageSlot.sol";
diff --git a/test/mocks/plugins/ValidationPluginMocks.sol b/test/mocks/plugins/ValidationPluginMocks.sol
index 1f899217..bcc80069 100644
--- a/test/mocks/plugins/ValidationPluginMocks.sol
+++ b/test/mocks/plugins/ValidationPluginMocks.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {UserOperation} from "../../../src/interfaces/erc4337/UserOperation.sol";
diff --git a/test/mocks/tokens/MockERC1155.sol b/test/mocks/tokens/MockERC1155.sol
index 2ec184a7..6f54cec8 100644
--- a/test/mocks/tokens/MockERC1155.sol
+++ b/test/mocks/tokens/MockERC1155.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ERC1155} from "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
diff --git a/test/mocks/tokens/MockERC20.sol b/test/mocks/tokens/MockERC20.sol
index 10b9451f..619d7171 100644
--- a/test/mocks/tokens/MockERC20.sol
+++ b/test/mocks/tokens/MockERC20.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
diff --git a/test/mocks/tokens/MockERC777.sol b/test/mocks/tokens/MockERC777.sol
index 913d7795..9bbb66ff 100644
--- a/test/mocks/tokens/MockERC777.sol
+++ b/test/mocks/tokens/MockERC777.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {IERC777} from "@openzeppelin/contracts/token/ERC777/IERC777.sol";
diff --git a/test/plugin/TokenReceiverPlugin.t.sol b/test/plugin/TokenReceiverPlugin.t.sol
index 4fa9ecfc..9c2ccffa 100644
--- a/test/plugin/TokenReceiverPlugin.t.sol
+++ b/test/plugin/TokenReceiverPlugin.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/plugin/owner/MultiOwnerPlugin.t.sol b/test/plugin/owner/MultiOwnerPlugin.t.sol
index ca784690..4ecab62d 100644
--- a/test/plugin/owner/MultiOwnerPlugin.t.sol
+++ b/test/plugin/owner/MultiOwnerPlugin.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/plugin/owner/MultiOwnerPluginIntegration.t.sol b/test/plugin/owner/MultiOwnerPluginIntegration.t.sol
index 23853523..71564fb1 100644
--- a/test/plugin/owner/MultiOwnerPluginIntegration.t.sol
+++ b/test/plugin/owner/MultiOwnerPluginIntegration.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/plugin/session/SessionKeyPluginWithMultiOwner.t.sol b/test/plugin/session/SessionKeyPluginWithMultiOwner.t.sol
index 83ecd853..e67fbbad 100644
--- a/test/plugin/session/SessionKeyPluginWithMultiOwner.t.sol
+++ b/test/plugin/session/SessionKeyPluginWithMultiOwner.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/plugin/session/permissions/SessionKeyERC20SpendLimits.t.sol b/test/plugin/session/permissions/SessionKeyERC20SpendLimits.t.sol
index 48bdf718..25132aa0 100644
--- a/test/plugin/session/permissions/SessionKeyERC20SpendLimits.t.sol
+++ b/test/plugin/session/permissions/SessionKeyERC20SpendLimits.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test, console} from "forge-std/Test.sol";
diff --git a/test/plugin/session/permissions/SessionKeyGasLimits.t.sol b/test/plugin/session/permissions/SessionKeyGasLimits.t.sol
index 2f7d2b43..3ab483f4 100644
--- a/test/plugin/session/permissions/SessionKeyGasLimits.t.sol
+++ b/test/plugin/session/permissions/SessionKeyGasLimits.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test, console} from "forge-std/Test.sol";
diff --git a/test/plugin/session/permissions/SessionKeyNativeTokenSpendLimits.t.sol b/test/plugin/session/permissions/SessionKeyNativeTokenSpendLimits.t.sol
index b8e00fe8..5596fa47 100644
--- a/test/plugin/session/permissions/SessionKeyNativeTokenSpendLimits.t.sol
+++ b/test/plugin/session/permissions/SessionKeyNativeTokenSpendLimits.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test, console} from "forge-std/Test.sol";
diff --git a/test/plugin/session/permissions/SessionKeyPermissions.t.sol b/test/plugin/session/permissions/SessionKeyPermissions.t.sol
index a8bbe8c4..7b17b93d 100644
--- a/test/plugin/session/permissions/SessionKeyPermissions.t.sol
+++ b/test/plugin/session/permissions/SessionKeyPermissions.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/upgrade/LightAccountToMSCA.t.sol b/test/upgrade/LightAccountToMSCA.t.sol
index 2fa335cc..e6f5c088 100644
--- a/test/upgrade/LightAccountToMSCA.t.sol
+++ b/test/upgrade/LightAccountToMSCA.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";
diff --git a/test/upgrade/MSCAToMSCA.t.sol b/test/upgrade/MSCAToMSCA.t.sol
index 222a1294..a63fa9ef 100644
--- a/test/upgrade/MSCAToMSCA.t.sol
+++ b/test/upgrade/MSCAToMSCA.t.sol
@@ -1,4 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// This file is part of Modular Account.
+//
+// Copyright 2024 Alchemy Insights, Inc.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
+// Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
+// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with this program.  If not, see
+// <https://www.gnu.org/licenses/>.
+
 pragma solidity ^0.8.22;
 
 import {Test} from "forge-std/Test.sol";