diff --git a/src/zarr/v3/config.py b/src/zarr/v3/config.py
index 98a25994c4..cebe5c1b09 100644
--- a/src/zarr/v3/config.py
+++ b/src/zarr/v3/config.py
@@ -43,7 +43,6 @@ def __init__(
         concurrency: Optional[int] = None,
         asyncio_loop: Optional[AbstractEventLoop] = None,
     ):
-
         order_parsed = parse_indexing_order(order)
         concurrency_parsed = parse_concurrency(concurrency)
         asyncio_loop_parsed = parse_asyncio_loop(asyncio_loop)
diff --git a/tests/v3/test_metadata.py b/tests/v3/test_metadata.py
index c7ca0f2e1a..e477842259 100644
--- a/tests/v3/test_metadata.py
+++ b/tests/v3/test_metadata.py
@@ -7,6 +7,7 @@
 
 from zarr.v3.metadata import parse_dimension_names, parse_zarr_format_v2, parse_zarr_format_v3
 
+
 # todo: test
 def test_datatype_enum():
     ...