diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 0fddc2f..35283c0 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -1,5 +1,8 @@
 name: CMake
 
+permissions:
+  contents: read
+
 on:
   push:
     paths-ignore: