diff --git a/bin/stunnel.js b/bin/stunnel.js
old mode 100644
new mode 100755
index 240e3dc..a9c9da8
--- a/bin/stunnel.js
+++ b/bin/stunnel.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 (function () {
 'use strict';