diff --git a/inventories/group_vars/virt.yml b/inventories/group_vars/virt.yml
index 961131de..cf820cbf 100644
--- a/inventories/group_vars/virt.yml
+++ b/inventories/group_vars/virt.yml
@@ -15,6 +15,7 @@
   sanoid_cron_minutes: '10,20,30,40,50,59'
   sanoid_zfs_dataset: "hdd_data_raidz/data"
   sanoid_snapshot_keep_daily: '31'
+  sanoid_snapshot_keep_monthly: '6'
   ### mgrote.smart
   smart_smartctlmail_cron_minutes: "15"
   smart_smartctlmail_cron_hours: "6"