diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d60ec0e..8db8478 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,6 +1,8 @@
 name: build
 on:
   pull_request
+permissions:
+  contents: read
 jobs:
   build:
     runs-on: ubuntu-latest