diff --git a/.mergify.yml b/.mergify.yml
index 4cf2cbc9e..5c223f239 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -200,6 +200,15 @@ pull_request_rules:
         branches:
           - release-v3.8
 
+  - name: backport patches to release-v3.9 branch
+    conditions:
+      - base=devel
+      - label=backport-to-release-v3.9
+    actions:
+      backport:
+        branches:
+          - release-v3.9
+
   - name: remove outdated approvals on ci/centos
     conditions:
       - base=ci/centos