diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index b793141..1c3c197 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -1,6 +1,16 @@
 name: CMake
 
-on: [push]
+on: 
+  pull_request: 
+    branches: 
+      - master
+    types: 
+      - opened
+      - synchronize
+      - reopened
+  push: 
+    branches: 
+      - master
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)