diff --git a/trello/util.py b/trello/util.py
old mode 100644
new mode 100755
index 02f89e67..bf9e3586
--- a/trello/util.py
+++ b/trello/util.py
@@ -1,3 +1,5 @@
+#!/usr/bin/python
+
 import os
 
 from requests_oauthlib import OAuth1Session