diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aeb18be5..840909e8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,9 +4,11 @@ on:
     push:
         branches:
             - main
+            - 3.x
     pull_request:
         branches:
             - main
+            - 3.x
 
 jobs:
     lint-test: