diff --git a/README.md b/README.md
index 16c16ad..ca73044 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,16 @@ ssh vps 'systemctl status stacks-backup.timer'
 ssh vps 'source ~/stacks/_backup/.env && restic -r /mnt/hidrive/users/valknar/Backup/stacks snapshots'
 ```
 
+## Notifications
+
+Watchtower and the backup script both POST to an n8n webhook, which forwards messages to Telegram.
+
+The webhook URL is set in two places:
+- `_backup/.env` → `WEBHOOK_URL`
+- `watchtower/.env` → `NOTIFICATION_URL` (uses `generic+https://` shoutrrr scheme)
+
+Both point to the same n8n workflow at `https://n8n.pivoine.art`. The workflow accepts `{ "text": "..." }` (backup) and `{ "message": "..." }` (watchtower) and sends either field to Telegram.
+
 ## Data
 
 Persistent data is stored in `~/stacks/.data/<stack>/` on the VPS using bind mounts. Database stacks use dedicated Postgres instances with simple credentials.