diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 45a344b..82d35f3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,5 +1,11 @@
 name: Build on Push & Pull Request
-on: [push, pull_request]
+on: 
+  push:
+    branches:
+      ["release-4.9.0"]
+  pull_request:
+    branches:
+      ["release-4.9.0"]
 
 jobs:
   build: