diff --git a/.github/workflows/pr-check.yml b/.github/workflows/pr-check.yml
index e5b2d45..37f7e49 100644
--- a/.github/workflows/pr-check.yml
+++ b/.github/workflows/pr-check.yml
@@ -4,6 +4,9 @@ on:
   pull_request:
     branches: [main]
 
+permissions:
+  contents: read
+
 concurrency:
   group: pr-check-${{ github.event.pull_request.number }}
   cancel-in-progress: true