diff --git a/.mergify.yml b/.mergify.yml
index b60b9a1..7f6f2af 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -27,6 +27,8 @@ queue_rules:
     commit_message_format:
       title: pr-title
       body: pr-body
+      trailers:
+        - approved-by
     merge_method: squash
 
 pull_request_rules: