diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2204da3e..d3240c20 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,5 +1,9 @@
 name: build
-on: [push, pull_request]
+on:
+  pull_request:
+    branches: [master]
+  push:
+    branches: [master]
 jobs:
   build:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/lint-python.yml b/.github/workflows/lint-python.yml
index 432377c6..afbb69ab 100644
--- a/.github/workflows/lint-python.yml
+++ b/.github/workflows/lint-python.yml
@@ -1,5 +1,9 @@
 name: lint_python
-on: [pull_request, push]
+on:
+  pull_request:
+    branches: [master]
+  push:
+    branches: [master]
 jobs:
   lint_python:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/precommit.yml b/.github/workflows/precommit.yml
index 73f7f7da..6cb979ac 100644
--- a/.github/workflows/precommit.yml
+++ b/.github/workflows/precommit.yml
@@ -6,7 +6,7 @@ on:
   pull_request:
     branches: [master]
   push:
-  workflow_dispatch:
+    branches: [master]
 jobs:
   pre-commit:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index 9e91f161..fa939797 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -1,5 +1,9 @@
 name: tox
-on: [push, pull_request]
+on:
+  pull_request:
+    branches: [master]
+  push:
+    branches: [master]
 jobs:
   tox:
     strategy: