diff --git a/examples/server-threads/server.ts b/examples/server-threads/server.ts
index 27a24af..16978b0 100644
--- a/examples/server-threads/server.ts
+++ b/examples/server-threads/server.ts
@@ -1,11 +1,12 @@
 import { createServer } from 'node:http';
+import { threadId } from 'node:worker_threads';
 import { mo } from '../../src/index.ts';
 import { listen, type ListenArgs } from '../../src/serve/index.ts';
 
 export const runServer = mo(import.meta, async (...args: ListenArgs): Promise<void> => {
   const srv = createServer((req, res) => {
     res.writeHead(200, { 'Content-Type': 'text/plain' });
-    res.end(`handled by worker ${process.pid}\n`);
+    res.end(`handled by thread ${threadId}\n`);
   });
   await listen(srv, ...args);
 });