diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca03d43..88861a0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,9 @@ on:
       - '**'
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   build-and-test:
     runs-on: ubuntu-latest