diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 378a872..f8645ec 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -5,6 +5,9 @@ on:
     branches: ["master"]
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   check:
     runs-on: ubuntu-latest