diff --git a/examples/app-router/app/api/sse/route.ts b/examples/app-router/app/api/sse/route.ts
index 971129a8b..9ce9a15fc 100644
--- a/examples/app-router/app/api/sse/route.ts
+++ b/examples/app-router/app/api/sse/route.ts
@@ -1,6 +1,11 @@
-import { wait } from "@open-next/utils";
 import type { NextRequest } from "next/server";
 
+function wait(ms: number) {
+  return new Promise((resolve) => {
+    setTimeout(resolve, ms);
+  });
+}
+
 export const dynamic = "force-dynamic";
 
 export async function GET(request: NextRequest) {