diff --git a/site-modules/profile/templates/swh/deploy/scheduler/swh-scheduler-update-metrics.timer.erb b/site-modules/profile/templates/swh/deploy/scheduler/swh-scheduler-update-metrics.timer.erb
index 5d16b9d5..f7cfb6d8 100644
--- a/site-modules/profile/templates/swh/deploy/scheduler/swh-scheduler-update-metrics.timer.erb
+++ b/site-modules/profile/templates/swh/deploy/scheduler/swh-scheduler-update-metrics.timer.erb
@@ -1,9 +1,11 @@
 [Install]
 WantedBy=timers.target
 
 [Timer]
-OnCalendar=daily
 Unit=swh-scheduler-update-metrics.service
+OnCalendar=00/4:00
+RandomizedDelaySec=1h
+FixedRandomDelay=true
 
 [Unit]
 Description=regular scheduler update-metrics refresh