diff --git a/packages/auth/amplify_auth_cognito_dart/pubspec.yaml b/packages/auth/amplify_auth_cognito_dart/pubspec.yaml
index 9e913cd248..4bb9312afb 100644
--- a/packages/auth/amplify_auth_cognito_dart/pubspec.yaml
+++ b/packages/auth/amplify_auth_cognito_dart/pubspec.yaml
@@ -45,7 +45,7 @@ dev_dependencies:
   build_verify: ^3.0.0
   build_web_compilers: ^4.1.4
   built_value_generator: ^8.10.1
-  ffigen: ^9.0.0
+  ffigen: ">=9.0.0 <21.0.0"
   json_serializable: ^6.11.0
   mockito: ^5.0.0
   smithy_codegen: