diff --git a/.github/workflows/core-build.yml b/.github/workflows/core-build.yml
index a178aed..db39014 100644
--- a/.github/workflows/core-build.yml
+++ b/.github/workflows/core-build.yml
@@ -1,6 +1,8 @@
 name: core-build
 on:
   push:
+    branches:
+      - 'master'
   pull_request:
   workflow_dispatch: