diff --git a/pkgs/http_client_conformance_tests/bin/generate_server_wrappers.dart b/pkgs/http_client_conformance_tests/bin/generate_server_wrappers.dart
index 6e86737c41..52e9d766c3 100644
--- a/pkgs/http_client_conformance_tests/bin/generate_server_wrappers.dart
+++ b/pkgs/http_client_conformance_tests/bin/generate_server_wrappers.dart
@@ -44,7 +44,8 @@ Future<StreamChannel<Object?>> startServer() async => spawnHybridUri(Uri(
 
 void main() async {
   final files = await Directory('lib/src').list().toList();
-  final formatter = DartFormatter();
+  final formatter =
+      DartFormatter(languageVersion: DartFormatter.latestLanguageVersion);
 
   files.where((file) => file.path.endsWith('_server.dart')).forEach((file) {
     final vmPath = file.path.replaceAll('_server.dart', '_server_vm.dart');
diff --git a/pkgs/http_client_conformance_tests/pubspec.yaml b/pkgs/http_client_conformance_tests/pubspec.yaml
index c3861ffc15..ae2662b693 100644
--- a/pkgs/http_client_conformance_tests/pubspec.yaml
+++ b/pkgs/http_client_conformance_tests/pubspec.yaml
@@ -11,7 +11,7 @@ environment:
 
 dependencies:
   async: ^2.8.2
-  dart_style: ^2.2.3
+  dart_style: ^2.3.7
   http: ^1.2.0
   stream_channel: ^2.1.1
   test: ^1.21.2