diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 61ffb56e..65df8815 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,7 +2,11 @@ name: GitHub CI
 
 on:
   pull_request:
+    branches:
+      - master
   push:
+    branches:
+      - master
   workflow_dispatch:
   schedule:
     - cron: 0 0 * * 0