diff --git a/plinth/modules/upgrades/data/lib/systemd/system/freedombox-manual-upgrade.service b/plinth/modules/upgrades/data/lib/systemd/system/freedombox-manual-upgrade.service
index 862db4196..c0f80714c 100644
--- a/plinth/modules/upgrades/data/lib/systemd/system/freedombox-manual-upgrade.service
+++ b/plinth/modules/upgrades/data/lib/systemd/system/freedombox-manual-upgrade.service
@@ -3,6 +3,7 @@ Description=Run unattended-upgrade once
 
 [Service]
 Type=oneshot
+ExecStartPre=-apt-get update --assume-yes --quiet
 ExecStart=unattended-upgrade --verbose
 KillMode=process
 TimeoutStopSec=900