diff --git a/src/dev-app/dev-app/dev-app-state.ts b/src/dev-app/dev-app/dev-app-state.ts
index a6a70d0763bb..17002e50f635 100644
--- a/src/dev-app/dev-app/dev-app-state.ts
+++ b/src/dev-app/dev-app/dev-app-state.ts
@@ -46,7 +46,7 @@ export function getAppState(): DevAppState {
       systemTheme: false,
       rippleDisabled: false,
       strongFocusEnabled: false,
-      m3Enabled: false,
+      m3Enabled: true,
       direction: 'ltr',
       colorApiBackCompat: true,
     };