diff --git a/dwds/CHANGELOG.md b/dwds/CHANGELOG.md
index e6a48cfa2..e83dbc16e 100644
--- a/dwds/CHANGELOG.md
+++ b/dwds/CHANGELOG.md
@@ -6,6 +6,7 @@
 - Add implementation for the VM Service's `getFlagList` API. - [#2438](https://github.com/dart-lang/webdev/pull/2438)
 - Hide more variables from the local scope when debugging. These variables were synthetically added by the compiler to
   support late local variables and don't appear in the original source code. - [#2445](https://github.com/dart-lang/webdev/pull/2445)
+- Require Dart `^3.4`
 
 ## 24.0.0
 
diff --git a/dwds/lib/src/debugging/inspector.dart b/dwds/lib/src/debugging/inspector.dart
index 588051396..b167ee06d 100644
--- a/dwds/lib/src/debugging/inspector.dart
+++ b/dwds/lib/src/debugging/inspector.dart
@@ -5,7 +5,6 @@
 import 'dart:math' as math;
 
 import 'package:async/async.dart';
-import 'package:collection/collection.dart';
 import 'package:dwds/src/config/tool_configuration.dart';
 import 'package:dwds/src/connections/app_connection.dart';
 import 'package:dwds/src/debugging/classes.dart';
@@ -113,9 +112,9 @@ class AppInspector implements AppInspectorInterface {
     final scripts = await scriptRefs;
 
     await DartUri.initialize();
-    DartUri.recordAbsoluteUris(libraries.map((lib) => lib.uri).whereNotNull());
+    DartUri.recordAbsoluteUris(libraries.map((lib) => lib.uri).nonNulls);
     DartUri.recordAbsoluteUris(
-      scripts.map((script) => script.uri).whereNotNull(),
+      scripts.map((script) => script.uri).nonNulls,
     );
 
     isolate.extensionRPCs?.addAll(await _getExtensionRpcs());
diff --git a/dwds/pubspec.yaml b/dwds/pubspec.yaml
index ec5e9d8ac..d0c4473cc 100644
--- a/dwds/pubspec.yaml
+++ b/dwds/pubspec.yaml
@@ -6,7 +6,7 @@ description: >-
   service protocol.
 repository: https://github.com/dart-lang/webdev/tree/master/dwds
 environment:
-  sdk: ^3.2.0-36.0.dev
+  sdk: ^3.4.0
 
 dependencies:
   async: ^2.9.0
@@ -15,46 +15,46 @@ dependencies:
   collection: ^1.15.0
   crypto: ^3.0.2
   dds: ^4.1.0
-  file: ">=6.0.0 <8.0.0"
-  http: ^0.13.4
+  file: ">=6.1.4 <8.0.0"
+  http: ^1.0.0
   http_multi_server: ^3.2.0
   logging: ^1.0.2
-  meta: ^1.7.0
+  meta: ^1.9.1
   package_config: ^2.0.2
   path: ^1.8.1
   pool: ^1.5.0
   pub_semver: ^2.1.1
   shelf: ^1.3.0
-  shelf_packages_handler: "^3.0.0"
-  shelf_proxy: ^1.0.1
+  shelf_packages_handler: ^3.0.0
+  shelf_proxy: ^1.0.4
   shelf_static: ^1.1.0
-  shelf_web_socket: ^1.0.1
+  shelf_web_socket: '>=1.0.0 <3.0.0'
   source_maps: ^0.10.10
   stack_trace: ^1.10.0
   sse: ^4.1.2
-  uuid: ^3.0.6
-  vm_service: ^14.0.0
+  uuid: ^4.0.0
+  vm_service: ^14.2.4
   vm_service_interface: 1.1.0
-  web_socket_channel: ^2.2.0
+  web_socket_channel: ^2.4.0
   webkit_inspection_protocol: ^1.0.1
 
 dev_dependencies:
-  args: ^2.3.1
-  build: ^2.3.0
+  args: ^2.4.2
+  build: ^2.3.1
   build_daemon: ^4.0.0
-  build_runner: ^2.4.0
+  build_runner: ^2.4.1
   build_version: ^2.1.1
-  build_web_compilers: ^4.0.4
-  built_value_generator: ^8.3.0
+  build_web_compilers: ^4.0.8
+  built_value_generator: ^8.4.2
   graphs: ^2.1.0
   frontend_server_common:
     path: ../frontend_server_common
-  js: ^0.6.4
+  js: ">=0.6.4 <0.8.0"
   lints: ^4.0.0
   pubspec_parse: ^1.2.0
-  puppeteer: ^3.0.0
-  stream_channel: ^2.1.0
-  test: ^1.21.1
+  puppeteer: ^3.1.1
+  stream_channel: ^2.1.2
+  test: ^1.21.6
   test_common:
     path: ../test_common
   webdriver: ^3.0.0