diff --git a/web-interface/server.js b/web-interface/server.js
index 6fcea90..3297cfa 100644
--- a/web-interface/server.js
+++ b/web-interface/server.js
@@ -5,7 +5,7 @@ const axios = require('axios');
 const { exec, spawn } = require('child_process');
 
 const app = express();
-const PORT = 4000;
+const PORT = process.env.PORT || 3000;
 
 // Security headers
 app.use((req, res, next) => {