diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index b9b4da1..4daf861 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -57,6 +57,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install .
+          rm -rf build
 
       - name: Download test results
         uses: actions/download-artifact@v2