diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1f8b452..169af7c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,5 +1,7 @@
 name: build
 on: [pull_request, push]
+permissions:
+  contents: read
 
 jobs:
   build: