diff --git a/packages/smithy/smithy_codegen/pubspec.yaml b/packages/smithy/smithy_codegen/pubspec.yaml
index d92bef6ed4..edd0ccaa5b 100644
--- a/packages/smithy/smithy_codegen/pubspec.yaml
+++ b/packages/smithy/smithy_codegen/pubspec.yaml
@@ -43,7 +43,7 @@ dev_dependencies:
   build_verify: ^3.0.0
   build_version: ^2.1.1
   built_value_generator: ^8.10.1
-  json_serializable: ">=6.9.4 <6.10.0"
+  json_serializable: ^6.11.1
   smithy_test:
     path: ../smithy_test
   test: ^1.22.1