diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index febf6992c4..d169cd7bbb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -63,7 +63,7 @@ jobs:
 
       - uses: jupyterlab/maintainer-tools/.github/actions/upload-coverage@v1
         with:
-          artifact_name: coverage-${{ matrix.python }}
+          artifact_name: coverage-${{ matrix.python-version }}
 
   coverage:
     runs-on: ubuntu-latest