diff --git a/test/cryptsuite.py b/test/cryptsuite.py
index d34dbfd0..4a077857 100755
--- a/test/cryptsuite.py
+++ b/test/cryptsuite.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import unittest
 import struct