diff --git a/index.js b/index.js
index 038c4dd..c48d8f1 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,6 @@
 const express = require('express');
 const session = require('express-session');
-const port = 3000;
+const port = process.env.APP_PORT;
 const app = express();
 const cookieParser = require('cookie-parser');