diff --git a/data/vpd_variables.py b/data/vpd_variables.py
index 3512776..dc310c8 100644
--- a/data/vpd_variables.py
+++ b/data/vpd_variables.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 r"""
 Contains VPD related constants.