diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 05b7f5bb..1267c51b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,6 +8,9 @@ on:
   schedule:
     - cron: "0 0 * * 0" # weekly
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest