diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1baa82c2..ca44e4b6 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -1,5 +1,8 @@
 name: build
-on: [ push, pull_request ]
+on:
+  push:
+    branches: [ main ]
+  pull_request:
 jobs:
   build:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 803ca01f..4d6bbbdb 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -1,5 +1,8 @@
 name: test
-on: [ push, pull_request ]
+on:
+  push:
+    branches: [ main ]
+  pull_request:
 jobs:
   test:
     runs-on: ubuntu-latest