diff --git a/debian/postinst b/debian/postinst
index 1da1b3e4..3a53e686 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -41,6 +41,13 @@ case "$1" in
 			flock -w 30 /var/log/proxmox-backup/tasks/active.lock sed -i 's/:termproxy::\([^@]\+\): /:termproxy::\1@pam: /' /var/log/proxmox-backup/tasks/active || true
 		fi
 
+		if dpkg --compare-versions "$2" 'lt' '2.2.2~'; then
+			echo "moving prune schedule from datacenter config to new prune job config"
+			proxmox-backup-manager update-to-prune-jobs-config \
+			    || echo "Failed to move prune jobs, please check manually"
+			true
+		fi
+
 		if dpkg --compare-versions "$2" 'lt' '2.1.3~' && test -e /etc/proxmox-backup/sync.cfg; then
 			prev_job=""