diff --git a/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart b/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart
index d65648ed6..7aa9fba49 100644
--- a/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart
+++ b/add_to_app/plugin/flutter_module_using_plugin/lib/main.dart
@@ -75,6 +75,7 @@ class MyApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Flutter Module Title',
+      theme: ThemeData.light(useMaterial3: true),
       routes: {
         '/': (context) => const FullScreenView(),
         '/mini': (context) => const Contents(),