diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 557d521..a65dcd6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,9 +2,9 @@ name: build
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, v*.x ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, v*.x ]
 
 jobs:
   test: