diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 19e70f6..415ec03 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,9 @@ on:
   pull_request:
   repository_dispatch:
     types: [automated-update-trigger]
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest