diff --git a/.github/workflows/clang-format.yml b/.github/workflows/clang-format.yml
index 25f62c8e..690bbde5 100644
--- a/.github/workflows/clang-format.yml
+++ b/.github/workflows/clang-format.yml
@@ -1,6 +1,9 @@
 name: clang-format
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [master]
+  pull_request:
 
 concurrency:
   group: ${{ github.workflow }}-format-${{ github.event.pull_request.number || github.ref }}
diff --git a/.github/workflows/freebsd.yml b/.github/workflows/freebsd.yml
index f6c96f95..977e514c 100644
--- a/.github/workflows/freebsd.yml
+++ b/.github/workflows/freebsd.yml
@@ -1,6 +1,9 @@
 name: freebsd
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [master]
+  pull_request:
 
 concurrency:
   group: ${{ github.workflow }}-freebsd-${{ github.event.pull_request.number || github.ref }}
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index fb4ab451..87775d5a 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -1,6 +1,9 @@
 name: linux
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [master]
+  pull_request:
 
 concurrency:
   group: ${{ github.workflow }}-linux-${{ github.event.pull_request.number || github.ref }}
diff --git a/.github/workflows/nix-tests.yml b/.github/workflows/nix-tests.yml
index c2193b99..cd6ea1e1 100644
--- a/.github/workflows/nix-tests.yml
+++ b/.github/workflows/nix-tests.yml
@@ -2,6 +2,7 @@ name: "Nix-Tests"
 on:
   pull_request:
   push:
+    branches: [master]
 concurrency:
   group: ${{ github.workflow }}-nix-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true