diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cbfc697f..0ef61267 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,6 +1,10 @@
 name: Build Project
 
-on: [push, pull_request]
+on:
+  pull_request:
+  push:
+    branches:
+    - master
 
 jobs:
   build:
diff --git a/.github/workflows/checkstyle.yml b/.github/workflows/checkstyle.yml
index 1f939369..052112e2 100644
--- a/.github/workflows/checkstyle.yml
+++ b/.github/workflows/checkstyle.yml
@@ -1,7 +1,10 @@
 name: Code Formatter
 
-on: [push]
-
+on:
+  pull_request:
+  push:
+    branches:
+    - master
 jobs:
   format:
     runs-on: ubuntu-latest