diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index da44942c2..1b1ec717e 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -4,7 +4,7 @@ on:
   push:
     branches: [ "main" ]
   pull_request:
-    branches: [ "main" ]
+    branches: [ "main", "2.x" ]
   merge_group:
 
 jobs: