diff --git a/bin/test_validate_dn_format.py b/bin/test_validate_dn_format.py
index cc71741..05eac23 100755
--- a/bin/test_validate_dn_format.py
+++ b/bin/test_validate_dn_format.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 
 import unittest
 import validate_dn_format
diff --git a/bin/validate_dn_format.py b/bin/validate_dn_format.py
index fedae0e..bee414d 100755
--- a/bin/validate_dn_format.py
+++ b/bin/validate_dn_format.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 
 import glob
 import os
diff --git a/bin/vomses-crosscheck b/bin/vomses-crosscheck
index fde5607..fa15c42 100755
--- a/bin/vomses-crosscheck
+++ b/bin/vomses-crosscheck
@@ -1,6 +1,4 @@
-#!/usr/bin/python
-from __future__ import print_function
-
+#!/usr/bin/python3
 import re
 import os
 import glob