diff --git a/templates/autopostgresqlbackup_post_script.j2 b/templates/autopostgresqlbackup_post_script.j2
index ad4d4d4..6aebaab 100644
--- a/templates/autopostgresqlbackup_post_script.j2
+++ b/templates/autopostgresqlbackup_post_script.j2
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 ### {{ ansible_managed }}
 
 source /etc/default/autopostgresqlbackup