diff --git a/app.js b/app.js
index 3c976a735a..6b7b1bb635 100644
--- a/app.js
+++ b/app.js
@@ -42,6 +42,8 @@
         process.exit(0);
     }
 
+    app.disable('x-powered-by');
+
     // Override bundles.json for HTTP requests
     app.use('/' + BUNDLE_FILE, function (req, res) {
         var bundles;