diff --git a/src/server/main.ts b/src/server/main.ts
index 556039f..589d40b 100644
--- a/src/server/main.ts
+++ b/src/server/main.ts
@@ -107,5 +107,7 @@ io.on('connection', (socket) => {
     });
 });
 
-console.log('listening on port :3000');
-io.listen(3000);
+const port = parseInt(process.env.PORT || '3000');
+
+console.log(`listening on port :${port}`);
+io.listen(port);