diff --git a/pacroller.timer b/pacroller.timer
index f8ca0af..2705b31 100644
--- a/pacroller.timer
+++ b/pacroller.timer
@@ -4,6 +4,7 @@ Description=Scheduled unattended upgrade for archlinux
 [Timer]
 OnCalendar=*-*-* 12:00:00
 RandomizedDelaySec=15m
+Persistent=true
 
 [Install]
 WantedBy=timers.target