diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b3ce8a1..e7d17b0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,9 @@ on:
     branches: [main]
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest