diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index 81b75e2..d90fd55 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -11,6 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+    - run: git fetch --prune --unshallow
     - name: Set up Python
       uses: actions/setup-python@v1.1.1
       with: