diff --git a/solidity/contracts/erc20.sol b/solidity/contracts/erc20.sol
index 681f38f..9ee52fd 100644
--- a/solidity/contracts/erc20.sol
+++ b/solidity/contracts/erc20.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
 import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
diff --git a/solidity/contracts/factory.sol b/solidity/contracts/factory.sol
index 2e94eb0..0fd408d 100644
--- a/solidity/contracts/factory.sol
+++ b/solidity/contracts/factory.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
 import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
diff --git a/solidity/contracts/lib/common.sol b/solidity/contracts/lib/common.sol
index 7b3d712..a339247 100644
--- a/solidity/contracts/lib/common.sol
+++ b/solidity/contracts/lib/common.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 /// @title A core library for Zeto based token contracts
 /// @author Kaleido, Inc.
diff --git a/solidity/contracts/lib/interfaces/izeto.sol b/solidity/contracts/lib/interfaces/izeto.sol
index a7f1034..d8f90cc 100644
--- a/solidity/contracts/lib/interfaces/izeto.sol
+++ b/solidity/contracts/lib/interfaces/izeto.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./izeto_base.sol";
 
diff --git a/solidity/contracts/lib/interfaces/izeto_base.sol b/solidity/contracts/lib/interfaces/izeto_base.sol
index 7a06370..dc57a05 100644
--- a/solidity/contracts/lib/interfaces/izeto_base.sol
+++ b/solidity/contracts/lib/interfaces/izeto_base.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoBase {
     event UTXOMint(uint256[] outputs, address indexed submitter, bytes data);
diff --git a/solidity/contracts/lib/interfaces/izeto_common.sol b/solidity/contracts/lib/interfaces/izeto_common.sol
index 75b9e24..ee203c6 100644
--- a/solidity/contracts/lib/interfaces/izeto_common.sol
+++ b/solidity/contracts/lib/interfaces/izeto_common.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 uint256 constant MAX_BATCH = 10;
 interface IZetoCommon {
diff --git a/solidity/contracts/lib/interfaces/izeto_encrypted.sol b/solidity/contracts/lib/interfaces/izeto_encrypted.sol
index e7995d5..680fcae 100644
--- a/solidity/contracts/lib/interfaces/izeto_encrypted.sol
+++ b/solidity/contracts/lib/interfaces/izeto_encrypted.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoEncrypted {
     event UTXOTransferWithEncryptedValues(
diff --git a/solidity/contracts/lib/interfaces/izeto_fungible_initializable.sol b/solidity/contracts/lib/interfaces/izeto_fungible_initializable.sol
index 4902974..728bba9 100644
--- a/solidity/contracts/lib/interfaces/izeto_fungible_initializable.sol
+++ b/solidity/contracts/lib/interfaces/izeto_fungible_initializable.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoFungibleInitializable {
     function initialize(
diff --git a/solidity/contracts/lib/interfaces/izeto_lockable.sol b/solidity/contracts/lib/interfaces/izeto_lockable.sol
index aaa2c87..86bc413 100644
--- a/solidity/contracts/lib/interfaces/izeto_lockable.sol
+++ b/solidity/contracts/lib/interfaces/izeto_lockable.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Commonlib} from "../common.sol";
 
diff --git a/solidity/contracts/lib/interfaces/izeto_nf_initializable.sol b/solidity/contracts/lib/interfaces/izeto_nf_initializable.sol
index 418c8e6..d72272f 100644
--- a/solidity/contracts/lib/interfaces/izeto_nf_initializable.sol
+++ b/solidity/contracts/lib/interfaces/izeto_nf_initializable.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoNonFungibleInitializable {
     function initialize(
diff --git a/solidity/contracts/lib/registry.sol b/solidity/contracts/lib/registry.sol
index 895e7ce..30abf9a 100644
--- a/solidity/contracts/lib/registry.sol
+++ b/solidity/contracts/lib/registry.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
 import {SmtLib} from "@iden3/contracts/lib/SmtLib.sol";
diff --git a/solidity/contracts/lib/zeto_base.sol b/solidity/contracts/lib/zeto_base.sol
index 696c750..e96467f 100644
--- a/solidity/contracts/lib/zeto_base.sol
+++ b/solidity/contracts/lib/zeto_base.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./interfaces/izeto_base.sol";
 import {Commonlib} from "./common.sol";
diff --git a/solidity/contracts/lib/zeto_common.sol b/solidity/contracts/lib/zeto_common.sol
index b22e87c..93e19c2 100644
--- a/solidity/contracts/lib/zeto_common.sol
+++ b/solidity/contracts/lib/zeto_common.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Commonlib} from "./common.sol";
 import {IZetoCommon} from "./interfaces/izeto_common.sol";
diff --git a/solidity/contracts/lib/zeto_fungible.sol b/solidity/contracts/lib/zeto_fungible.sol
index 9f0b867..e209aa4 100644
--- a/solidity/contracts/lib/zeto_fungible.sol
+++ b/solidity/contracts/lib/zeto_fungible.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Groth16Verifier_CheckHashesValue} from "./verifier_check_hashes_value.sol";
 import {Groth16Verifier_CheckNullifierValue} from "./verifier_check_nullifier_value.sol";
diff --git a/solidity/contracts/lib/zeto_fungible_withdraw.sol b/solidity/contracts/lib/zeto_fungible_withdraw.sol
index 2ee83b6..a702c85 100644
--- a/solidity/contracts/lib/zeto_fungible_withdraw.sol
+++ b/solidity/contracts/lib/zeto_fungible_withdraw.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Groth16Verifier_CheckHashesValue} from "./verifier_check_hashes_value.sol";
 import {Groth16Verifier_CheckInputsOutputsValue} from "./verifier_check_inputs_outputs_value.sol";
diff --git a/solidity/contracts/lib/zeto_fungible_withdraw_nullifier.sol b/solidity/contracts/lib/zeto_fungible_withdraw_nullifier.sol
index 153e0dd..5dfee67 100644
--- a/solidity/contracts/lib/zeto_fungible_withdraw_nullifier.sol
+++ b/solidity/contracts/lib/zeto_fungible_withdraw_nullifier.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Groth16Verifier_CheckHashesValue} from "./verifier_check_hashes_value.sol";
 import {Groth16Verifier_CheckNullifierValue} from "./verifier_check_nullifier_value.sol";
diff --git a/solidity/contracts/lib/zeto_lock.sol b/solidity/contracts/lib/zeto_lock.sol
index ce2b469..0e34c20 100644
--- a/solidity/contracts/lib/zeto_lock.sol
+++ b/solidity/contracts/lib/zeto_lock.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./interfaces/izeto_base.sol";
 import {IZetoLockable, ILockVerifier, IBatchLockVerifier} from "./interfaces/izeto_lockable.sol";
diff --git a/solidity/contracts/lib/zeto_nullifier.sol b/solidity/contracts/lib/zeto_nullifier.sol
index 225e500..9190da4 100644
--- a/solidity/contracts/lib/zeto_nullifier.sol
+++ b/solidity/contracts/lib/zeto_nullifier.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./interfaces/izeto_base.sol";
 import {ZetoCommon} from "./zeto_common.sol";
diff --git a/solidity/contracts/zeto_anon.sol b/solidity/contracts/zeto_anon.sol
index 8b9d923..0f81b6d 100644
--- a/solidity/contracts/zeto_anon.sol
+++ b/solidity/contracts/zeto_anon.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";
diff --git a/solidity/contracts/zeto_anon_enc.sol b/solidity/contracts/zeto_anon_enc.sol
index 5e351e2..fae56f7 100644
--- a/solidity/contracts/zeto_anon_enc.sol
+++ b/solidity/contracts/zeto_anon_enc.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoEncrypted} from "./lib/interfaces/izeto_encrypted.sol";
 import {ILockVerifier, IBatchLockVerifier} from "./lib/interfaces/izeto_lockable.sol";
diff --git a/solidity/contracts/zeto_anon_enc_nullifier.sol b/solidity/contracts/zeto_anon_enc_nullifier.sol
index e3cfb5c..8ba6c7d 100644
--- a/solidity/contracts/zeto_anon_enc_nullifier.sol
+++ b/solidity/contracts/zeto_anon_enc_nullifier.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoEncrypted} from "./lib/interfaces/izeto_encrypted.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";
diff --git a/solidity/contracts/zeto_anon_enc_nullifier_kyc.sol b/solidity/contracts/zeto_anon_enc_nullifier_kyc.sol
index f52ecef..417ee8a 100644
--- a/solidity/contracts/zeto_anon_enc_nullifier_kyc.sol
+++ b/solidity/contracts/zeto_anon_enc_nullifier_kyc.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoEncrypted} from "./lib/interfaces/izeto_encrypted.sol";
 import {ILockVerifier, IBatchLockVerifier} from "./lib/interfaces/izeto_lockable.sol";
diff --git a/solidity/contracts/zeto_anon_enc_nullifier_non_repudiation.sol b/solidity/contracts/zeto_anon_enc_nullifier_non_repudiation.sol
index dc9e82d..3a89904 100644
--- a/solidity/contracts/zeto_anon_enc_nullifier_non_repudiation.sol
+++ b/solidity/contracts/zeto_anon_enc_nullifier_non_repudiation.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
 import {Groth16Verifier_CheckHashesValue} from "./lib/verifier_check_hashes_value.sol";
diff --git a/solidity/contracts/zeto_anon_nullifier.sol b/solidity/contracts/zeto_anon_nullifier.sol
index 46b3861..01593fa 100644
--- a/solidity/contracts/zeto_anon_nullifier.sol
+++ b/solidity/contracts/zeto_anon_nullifier.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";
diff --git a/solidity/contracts/zeto_anon_nullifier_kyc.sol b/solidity/contracts/zeto_anon_nullifier_kyc.sol
index 8219843..9203f3d 100644
--- a/solidity/contracts/zeto_anon_nullifier_kyc.sol
+++ b/solidity/contracts/zeto_anon_nullifier_kyc.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";
diff --git a/solidity/contracts/zeto_nf_anon.sol b/solidity/contracts/zeto_nf_anon.sol
index c1139f4..8e20a26 100644
--- a/solidity/contracts/zeto_nf_anon.sol
+++ b/solidity/contracts/zeto_nf_anon.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {Groth16Verifier_CheckUtxosNfOwner} from "./lib/verifier_check_utxos_nf_owner.sol";
diff --git a/solidity/contracts/zeto_nf_anon_nullifier.sol b/solidity/contracts/zeto_nf_anon_nullifier.sol
index 44dfb75..4d2ed06 100644
--- a/solidity/contracts/zeto_nf_anon_nullifier.sol
+++ b/solidity/contracts/zeto_nf_anon_nullifier.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {ILockVerifier, IBatchLockVerifier} from "./lib/interfaces/izeto_lockable.sol";
diff --git a/solidity/contracts/zkDvP.sol b/solidity/contracts/zkDvP.sol
index 83460ad..70c66ce 100644
--- a/solidity/contracts/zkDvP.sol
+++ b/solidity/contracts/zkDvP.sol
@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Commonlib} from "./lib/common.sol";
 import {Zeto_Anon} from "./zeto_anon.sol";