diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 115d7cc7..15ab0791 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,6 +8,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   changes:
     runs-on: ubuntu-latest