diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fab1f57..b61e341 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,9 @@ on:
       - 'v*'
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   build-test:
     runs-on: ${{ matrix.os }}