diff --git a/lib/wrap_utils.py b/lib/wrap_utils.py
index de678b3..231dff8 100755
--- a/lib/wrap_utils.py
+++ b/lib/wrap_utils.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 r"""
 This module provides functions which are useful for writing python wrapper functions (i.e. in this context, a