diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index 1ae0fcd..6a7608a 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -29,7 +29,7 @@ jobs:
           if [[ "$PYTHON_VERSION" == "3.9"* ]]; then
             echo "Detected Python version: $PYTHON_VERSION"
             echo "Skipping tests with xarray versions that require newer python"
-            tox -p --skip-env xarray202501
+            tox -p --skip-env py-xarray202501
           else
             tox -p
           fi
\ No newline at end of file