diff --git a/.github/workflows/coverage-diff.yml b/.github/workflows/coverage-diff.yml
index 249d049b..bec2c7a1 100644
--- a/.github/workflows/coverage-diff.yml
+++ b/.github/workflows/coverage-diff.yml
@@ -10,6 +10,7 @@ jobs:
     permissions:
       checks: write
       pull-requests: write
+      contents: read
     steps:
       - uses: actions/checkout@v3
       - name: Jest coverage comment