diff --git a/.github/workflows/ci-sanity.yml b/.github/workflows/ci-sanity.yml
index 83cca27..e3255c7 100644
--- a/.github/workflows/ci-sanity.yml
+++ b/.github/workflows/ci-sanity.yml
@@ -4,6 +4,9 @@ on:
   push:
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   markdown-lint:
     runs-on: ubuntu-latest