diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 47c6c26..444aa38 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -8,6 +8,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   test:
     name: continuous-integration