diff --git a/index.js b/index.js
index dabe0b9..2866de3 100644
--- a/index.js
+++ b/index.js
@@ -7,7 +7,7 @@ service = new turndown();
 
 const express = require('express')
 const app = express()
-const port = 4040
+const port = process.env.PORT
 
 app.get('/', (req, res) => {
 	url = req.query.url;