diff --git a/.github/mergify.yml b/.github/mergify.yml
index 9944e7b51..7aa741aad 100644
--- a/.github/mergify.yml
+++ b/.github/mergify.yml
@@ -6,4 +6,4 @@ pull_request_rules:
     actions:
       backport:
         branches:
-          - 11.1
+          - "11.1"