diff --git a/ad-auth/templates/renew_krb5.j2 b/ad-auth/templates/renew_krb5.j2
index bafb8e8fc6c3e55a579c704e7ba3bc279734468b..903f8b0a544045bd75187bbb29b4baa1c0fbdc13 100644
--- a/ad-auth/templates/renew_krb5.j2
+++ b/ad-auth/templates/renew_krb5.j2
@@ -1 +1,3 @@
+#!/bin/bash
 /usr/sbin/adcli update -D {{ domain }}
+