diff --git a/.github/workflows/main-ci.yml b/.github/workflows/main-ci.yml
index fcd186b9f..24ce4cf99 100644
--- a/.github/workflows/main-ci.yml
+++ b/.github/workflows/main-ci.yml
@@ -8,6 +8,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
  job:
   runs-on: ubuntu-latest