diff --git a/scripts/class_loader_headers_update.py b/scripts/class_loader_headers_update.py
index f328a641..71106073 100755
--- a/scripts/class_loader_headers_update.py
+++ b/scripts/class_loader_headers_update.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Software License Agreement (BSD License)
 #
 # Copyright (c) 2018, Open Source Robotics Foundation, Inc.