diff --git a/rst2ipynb.py b/rst2ipynb.py
old mode 100644
new mode 100755
index 6c82f89..c6c266c
--- a/rst2ipynb.py
+++ b/rst2ipynb.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 """
 A minimal front end to the Docutils Publisher, producing an ipython notebook.
 """