diff --git a/bundles/systemd-timers/files/systemd-timer-monitored b/bundles/systemd-timers/files/systemd-timer-monitored
index d9a2482..f474374 100644
--- a/bundles/systemd-timers/files/systemd-timer-monitored
+++ b/bundles/systemd-timers/files/systemd-timer-monitored
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 timer="$1"
 shift