diff --git a/designate/templates/bin/_designate-service-cleaner.sh.tpl b/designate/templates/bin/_designate-service-cleaner.sh.tpl
index aada3787da..045b85c937 100644
--- a/designate/templates/bin/_designate-service-cleaner.sh.tpl
+++ b/designate/templates/bin/_designate-service-cleaner.sh.tpl
@@ -1,3 +1,4 @@
+#!/bin/bash
 # Copyright (c) 2025 VEXXHOST, Inc.
 # SPDX-License-Identifier: Apache-2.0