diff --git a/.github/workflows/all.yml b/.github/workflows/all.yml
index 04d517db0..e04b61c6e 100644
--- a/.github/workflows/all.yml
+++ b/.github/workflows/all.yml
@@ -1,5 +1,11 @@
 name: all
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
 
 jobs:
   build_fedora_32: