diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 4bc84e91c..1539212f5 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -3,6 +3,9 @@ name: CMake
 on:
 
   push:
+    branches:
+    - master
+
     paths:
     - src/**
     - "**/CMakeLists.txt"
@@ -12,6 +15,9 @@ on:
     - "!**/Makefile*"
 
   pull_request:
+    branches:
+    - master
+
     paths:
     - src/**
     - "**/CMakeLists.txt"