diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 60d86838..c60be6bd 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -1,6 +1,8 @@
 name: Build Linux
 
-on: [push]
+on:
+  push:
+    branches: [ "master", "release_1" ]
 
 jobs:
   build:
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 88370f89..c7d83962 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -1,6 +1,8 @@
 name: Build MacOS
 
-on: [push]
+on:
+  push:
+    branches: [ "master", "release_1" ]
 
 jobs:
   build:
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index d3aadc8d..8d033e54 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -1,6 +1,8 @@
 name: Build Windows
 
-on: [push]
+on:
+  push:
+    branches: [ "master", "release_1" ]
 
 jobs:
   build: