diff --git a/bin/add-parents.py b/bin/add-parents.py
--- a/bin/add-parents.py
+++ b/bin/add-parents.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 
 """
diff --git a/bin/nullgzip.py b/bin/nullgzip.py
--- a/bin/nullgzip.py
+++ b/bin/nullgzip.py
@@ -1,4 +1,5 @@
-#! /usr/bin/python
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
 
 from __future__ import print_function
 import gzip
diff --git a/bin/stripFITS.py b/bin/stripFITS.py
--- a/bin/stripFITS.py
+++ b/bin/stripFITS.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 
 """
diff --git a/bin/translateRevlist.py b/bin/translateRevlist.py
--- a/bin/translateRevlist.py
+++ b/bin/translateRevlist.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 
 import subprocess