diff --git a/.github/workflows/docstring-labeler.yml b/.github/workflows/docstring-labeler.yml
index 1eea6cbfe..4f81a3653 100644
--- a/.github/workflows/docstring-labeler.yml
+++ b/.github/workflows/docstring-labeler.yml
@@ -37,6 +37,8 @@ jobs:
         uses: actions/checkout@v3
         with:
           ref: ${{ github.event.pull_request.head.ref }}
+          # This must be set to correctly checkout a fork
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
 
       - name: Get docstrings
         id: head-docstrings