diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a7f48d7cd6..c7d4f32c68 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,11 +8,11 @@ default_language_version:
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: 'v0.1.14'
+    rev: 'v0.2.1'
     hooks:
     - id: ruff
   - repo: https://github.com/psf/black
-    rev: 23.12.1
+    rev: 24.2.0
     hooks:
     - id: black
   - repo: https://github.com/codespell-project/codespell
diff --git a/zarr/convenience.py b/zarr/convenience.py
index 9c0deeea47..b4b8bb5293 100644
--- a/zarr/convenience.py
+++ b/zarr/convenience.py
@@ -1,4 +1,5 @@
 """Convenience functions for storing and loading data."""
+
 import itertools
 import os
 import re
diff --git a/zarr/core.py b/zarr/core.py
index d22a9d79c3..5727afa884 100644
--- a/zarr/core.py
+++ b/zarr/core.py
@@ -2060,9 +2060,11 @@ def _process_chunk(
                 index_selection = PartialChunkIterator(chunk_selection, self.chunks)
                 for start, nitems, partial_out_selection in index_selection:
                     expected_shape = [
-                        len(range(*partial_out_selection[i].indices(self.chunks[0] + 1)))
-                        if i < len(partial_out_selection)
-                        else dim
+                        (
+                            len(range(*partial_out_selection[i].indices(self.chunks[0] + 1)))
+                            if i < len(partial_out_selection)
+                            else dim
+                        )
                         for i, dim in enumerate(self.chunks)
                     ]
                     if isinstance(cdata, UncompressedPartialReadBufferV3):
diff --git a/zarr/indexing.py b/zarr/indexing.py
index 3042147ebb..5a2b7c0eb4 100644
--- a/zarr/indexing.py
+++ b/zarr/indexing.py
@@ -545,11 +545,11 @@ def ix_(selection, shape):
 
     # replace slice and int as these are not supported by numpy.ix_
     selection = [
-        slice_to_range(dim_sel, dim_len)
-        if isinstance(dim_sel, slice)
-        else [dim_sel]
-        if is_integer(dim_sel)
-        else dim_sel
+        (
+            slice_to_range(dim_sel, dim_len)
+            if isinstance(dim_sel, slice)
+            else [dim_sel] if is_integer(dim_sel) else dim_sel
+        )
         for dim_sel, dim_len in zip(selection, shape)
     ]
 
diff --git a/zarr/n5.py b/zarr/n5.py
index 44b44e69e2..c50c18f718 100644
--- a/zarr/n5.py
+++ b/zarr/n5.py
@@ -1,5 +1,6 @@
 """This module contains a storage class and codec to support the N5 format.
 """
+
 import os
 import struct
 import sys
diff --git a/zarr/storage.py b/zarr/storage.py
index aa27e98e6f..a26dc636db 100644
--- a/zarr/storage.py
+++ b/zarr/storage.py
@@ -14,6 +14,7 @@
 path) and a `getsize` method (return the size in bytes of a given value).
 
 """
+
 import atexit
 import errno
 import glob
diff --git a/zarr/sync.py b/zarr/sync.py
index 03046a4a32..ba1c5df5b3 100644
--- a/zarr/sync.py
+++ b/zarr/sync.py
@@ -8,6 +8,7 @@ class Synchronizer(Protocol):
     """Base class for synchronizers."""
 
     def __getitem__(self, item):
+        # see subclasses
         ...
 
 
diff --git a/zarr/types.py b/zarr/types.py
index 1de270f25c..cc29a350f5 100644
--- a/zarr/types.py
+++ b/zarr/types.py
@@ -10,4 +10,5 @@
 
 class MetaArray(Protocol):
     def __array_function__(self, func, types, args, kwargs):
+        # To be extended
         ...