diff --git a/bin/plug_ins/Auto_reboot/cp_master b/bin/plug_ins/Auto_reboot/cp_master
index 1a885b5..8dd9e0e 100755
--- a/bin/plug_ins/Auto_reboot/cp_master
+++ b/bin/plug_ins/Auto_reboot/cp_master
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 r"""
 Set the auto_boot policy according to the caller's wishes.
diff --git a/bin/plug_ins/FFDC/cp_ffdc_check b/bin/plug_ins/FFDC/cp_ffdc_check
index 97a3f44..8d51271 100755
--- a/bin/plug_ins/FFDC/cp_ffdc_check
+++ b/bin/plug_ins/FFDC/cp_ffdc_check
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from gen_print import *
 from gen_valid import *
diff --git a/bin/plug_ins/Soft_errors/cp_post_boot b/bin/plug_ins/Soft_errors/cp_post_boot
index f49cd26..4eb951c 100755
--- a/bin/plug_ins/Soft_errors/cp_post_boot
+++ b/bin/plug_ins/Soft_errors/cp_post_boot
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from gen_print import *
 from gen_valid import *
diff --git a/bin/plug_ins/Stop/cp_stop_check b/bin/plug_ins/Stop/cp_stop_check
index fd63304..e3ef1cb 100755
--- a/bin/plug_ins/Stop/cp_stop_check
+++ b/bin/plug_ins/Stop/cp_stop_check
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 r"""
 Check for stop conditions.  Return code of 2 if stop conditions are found.