diff --git a/.github/workflows/clang_format.yml b/.github/workflows/clang_format.yml
index 392fa8499db2..71dd6d07896b 100644
--- a/.github/workflows/clang_format.yml
+++ b/.github/workflows/clang_format.yml
@@ -2,6 +2,8 @@ name: Check packages with clang-format
 
 on: [pull_request]
 
+permissions: read-all
+
 jobs:
   build:
     runs-on: ubuntu-latest