diff --git a/.github/workflows/internal.ci.yml b/.github/workflows/internal.ci.yml
index 7347a905..39b337ed 100644
--- a/.github/workflows/internal.ci.yml
+++ b/.github/workflows/internal.ci.yml
@@ -10,6 +10,8 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions: read-all
+
 jobs:
   package-source-tgz:
     secrets: inherit