diff --git a/web_embedding/element_embedding_demo/lib/main.dart b/web_embedding/element_embedding_demo/lib/main.dart
index 159af27ed..4e68290ae 100644
--- a/web_embedding/element_embedding_demo/lib/main.dart
+++ b/web_embedding/element_embedding_demo/lib/main.dart
@@ -64,7 +64,8 @@ class _MyAppState extends State<MyApp> {
     return MaterialApp(
       title: 'Element embedding',
       theme: ThemeData(
-        primarySwatch: Colors.blue,
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
+        useMaterial3: true,
       ),
       debugShowCheckedModeBanner: false,
       home: demoScreenRouter(_currentDemoScreen),