diff --git a/packages/dropdown_button2_test/pubspec.yaml b/packages/dropdown_button2_test/pubspec.yaml
index b8671e3..4dc811b 100644
--- a/packages/dropdown_button2_test/pubspec.yaml
+++ b/packages/dropdown_button2_test/pubspec.yaml
@@ -14,7 +14,7 @@ dependencies:
     path: ../dropdown_button2
 
 dev_dependencies:
-  flutter_lints: ^2.0.1
+  flutter_lints: ^4.0.0
   flutter_test:
     sdk: flutter
   file: ^7.0.0