diff --git a/simplistic_calculator/lib/main.dart b/simplistic_calculator/lib/main.dart
index 7f8ecd0a6..d9eeecdfe 100644
--- a/simplistic_calculator/lib/main.dart
+++ b/simplistic_calculator/lib/main.dart
@@ -347,6 +347,7 @@ class CalculatorApp extends ConsumerWidget {
 
     return MaterialApp(
       debugShowCheckedModeBanner: false,
+      theme: ThemeData.light(useMaterial3: true),
       home: Scaffold(
         body: Container(
           color: Colors.white,