diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6f5acfd..8e76048 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [master]
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     runs-on: ubuntu-latest