diff --git a/framework/backend/entry-node.ts b/framework/backend/entry-node.ts
index aa692613a6b009125c83d6be60011e331ac3fd08..d934c84353c66ea5767a25695af66ddada5835ae 100644
--- a/framework/backend/entry-node.ts
+++ b/framework/backend/entry-node.ts
@@ -7,6 +7,7 @@ const protocol = "http";
 
 const server = serve({
   fetch: app.fetch,
+  port: Number(process.env.PORT ?? 3000),
 }, ({ address, port }) => {
   if (address === "::") address = "::1";
   console.info(url.format({