diff --git a/index.js b/index.js
old mode 100644
new mode 100755
index 5ded0c4..73489a1
--- a/index.js
+++ b/index.js
@@ -1,3 +1,4 @@
+#! /usr/bin/env node
 /* eslint-disable typescript/no-var-requires */
 
 const yargs = require('yargs');