diff --git a/fs2zammad b/fs2zammad
index 72adaca..a7d1639 100755
--- a/fs2zammad
+++ b/fs2zammad
@@ -272,6 +272,7 @@ os.makedirs("failed", exist_ok=True)
 ticket_ids = os.listdir("tickets/")
 print(f"Found {len(ticket_ids)} tickets on filesystem.")
 
+ticket_ids.sort()
 for id in ticket_ids:
     try:
         create_zammad_ticket(id, zammad, h2t, 3)