diff --git a/contribs/cray/csm/slurmconfgen_smw.py b/contribs/cray/csm/slurmconfgen_smw.py
index cf2bf56f82..013181447f 100644
--- a/contribs/cray/csm/slurmconfgen_smw.py
+++ b/contribs/cray/csm/slurmconfgen_smw.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright 2015-2016 Cray Inc. All Rights Reserved.
 """ A script to generate slurm.conf and gres.conf for a
diff --git a/contribs/cray/slurmconfgen.py.in b/contribs/cray/slurmconfgen.py.in
index b92aabc731..970c5b4802 100644
--- a/contribs/cray/slurmconfgen.py.in
+++ b/contribs/cray/slurmconfgen.py.in
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 #
 # (c) Copyright 2013 Cray Inc.  All Rights Reserved.
 #
diff --git a/doc/html/shtml2html.py b/doc/html/shtml2html.py
index 0b03182b80..43954a37a9 100755
--- a/doc/html/shtml2html.py
+++ b/doc/html/shtml2html.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import re
 import sys
diff --git a/doc/man/man2html.py b/doc/man/man2html.py
index 54909096b9..93433d6fa3 100755
--- a/doc/man/man2html.py
+++ b/doc/man/man2html.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import re
 import sys
diff --git a/testsuite/expect/regression.py b/testsuite/expect/regression.py
index 938aecc154..ea64c7cce0 100755
--- a/testsuite/expect/regression.py
+++ b/testsuite/expect/regression.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 ############################################################################
 # Copyright (C) 2006 The Regents of the University of California.
 # Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).