diff --git a/maintenance/deployment-retention.sh b/maintenance/deployment-retention.sh
index f8eb524..733a869 100755
--- a/maintenance/deployment-retention.sh
+++ b/maintenance/deployment-retention.sh
@@ -7,7 +7,7 @@ echo "Deleting deployments older than 90 days..."
 
 sqlite3 "$DB_FILE" "
 DELETE FROM deployments
-WHERE created_at < datetime('now','-90 day');
+WHERE started_at < datetime('now','-90 day');
 "
 
 echo "Done."