diff --git a/README.md b/README.md
index 32197b61b..25b07c249 100644
--- a/README.md
+++ b/README.md
@@ -32,8 +32,11 @@ permissions:
 jobs:
   update_release_draft:
     permissions:
-      contents: write  # for release-drafter/release-drafter to create a github release
-      pull-requests: write  # for release-drafter/release-drafter to add label to PR
+      # write permission is required to create a github release
+      contents: write
+      # write permission is required for autolabeler
+      # otherwise, read permission is required at least
+      pull-requests: write
     runs-on: ubuntu-latest
     steps:
       # (Optional) GitHub Enterprise requires GHE_HOST variable set