diff --git a/n8n/compose.yaml b/n8n/compose.yaml
index bc4aa52..75a88ae 100644
--- a/n8n/compose.yaml
+++ b/n8n/compose.yaml
@@ -30,6 +30,8 @@ services:
       N8N_SMTP_PASS: ${EMAIL_SMTP_PASSWORD}
       N8N_SMTP_SENDER: ${EMAIL_FROM}
       N8N_SMTP_SSL: "true"
+      # Mattermost webhook for notifications
+      MATTERMOST_WEBHOOK_URL: ${MATTERMOST_WEBHOOK_URL:-}
     depends_on:
       - postgres
     networks: