diff --git a/.github/workflows/formats.yml b/.github/workflows/formats.yml
index 4012b66..12b0eb4 100644
--- a/.github/workflows/formats.yml
+++ b/.github/workflows/formats.yml
@@ -2,6 +2,9 @@ name: Formats
 
 on: ['push', 'pull_request']
 
+permissions:
+  contents: read
+
 jobs:
   ci:
     runs-on: ${{ matrix.os }}