diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 664711b..01a09f5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,6 +9,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 jobs:
   run-tests:
     runs-on: macos-26