diff --git a/.github/workflows/cmake-single-platform.yml b/.github/workflows/cmake-single-platform.yml
index 0ac33d9..48ef23a 100644
--- a/.github/workflows/cmake-single-platform.yml
+++ b/.github/workflows/cmake-single-platform.yml
@@ -2,6 +2,9 @@
 # See: https://github.com/actions/starter-workflows/blob/main/ci/cmake-multi-platform.yml
 name: CMake on a single platform
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: [ "main" ]