diff --git a/.github/workflows/cmr-checks.yml b/.github/workflows/cmr-checks.yml
index b6e759fc33..59fde6a2b3 100644
--- a/.github/workflows/cmr-checks.yml
+++ b/.github/workflows/cmr-checks.yml
@@ -5,6 +5,9 @@ on:
     branches: [ master, main, feature/**, CMR-**, cmr-**]
   pull_request:
     branches: [ master, main , features/**, CMR-**, cmr-**]
+permissions:
+  contents: read
+
 jobs:
   cloc:
     runs-on: ubuntu-latest