diff --git a/.mergify.yml b/.mergify.yml
index 2584ac6f1..c1375dd9d 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -1,3 +1,8 @@
+# Validate your changes with:
+#
+#   $ curl -F 'data=@.mergify.yml' https://gh.mergify.io/validate
+#
+# https://doc.mergify.io/
 pull_request_rules:
   - name: remove outdated reviews
     conditions: