diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 24297747..28801fcd 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -3,6 +3,9 @@ on:
   push:
     branches: [master]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: macos-latest-xlarge