diff --git a/.github/workflows/update-contributors.yml b/.github/workflows/update-contributors.yml
index a3d431f..a0197eb 100644
--- a/.github/workflows/update-contributors.yml
+++ b/.github/workflows/update-contributors.yml
@@ -21,6 +21,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
+          ref: main
           fetch-depth: 0
 
       - name: Setup Node.js
@@ -39,5 +40,6 @@ jobs:
         with:
           commit_message: "docs: update contributors in README [skip ci]"
           file_pattern: "README.md"
+          branch: main
           commit_user_name: "github-actions[bot]"
           commit_user_email: "github-actions[bot]@users.noreply.github.com"