diff --git a/.github/workflows/cpp-lint.yml b/.github/workflows/cpp-lint.yml
index 9d03e5be0..ed4a72f3f 100644
--- a/.github/workflows/cpp-lint.yml
+++ b/.github/workflows/cpp-lint.yml
@@ -10,6 +10,9 @@ on:
     paths:
       - 'source/**'
 
+permissions:
+  contents: read
+
 jobs:
   cppcheck:
     name: Cppcheck