diff --git a/core/lib/makeswift/runtime.ts b/core/lib/makeswift/runtime.ts
index e988b5cf9..f5a7d6796 100644
--- a/core/lib/makeswift/runtime.ts
+++ b/core/lib/makeswift/runtime.ts
@@ -1,3 +1,10 @@
 import { ReactRuntime } from '@makeswift/runtime/react';
 
-export const runtime = new ReactRuntime();
+export const runtime = new ReactRuntime({
+  breakpoints: {
+    small: { width: 640, viewport: 390, label: 'Small' },
+    medium: { width: 768, viewport: 765, label: 'Medium' },
+    large: { width: 1024, viewport: 1000, label: 'Large' },
+    screen: { width: 1280, label: 'XL' },
+  },
+});