diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e0972b6..921b0d0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,6 +1,9 @@
 name: build
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)