diff --git a/cloudpathlib/cloudpath.py b/cloudpathlib/cloudpath.py
index 01dc8205..6a12a21f 100644
--- a/cloudpathlib/cloudpath.py
+++ b/cloudpathlib/cloudpath.py
@@ -129,14 +129,14 @@ def decorator(cls: Type[CloudPathT]) -> Type[CloudPathT]:
 
 class CloudPathMeta(abc.ABCMeta):
     @overload
-    def __call__(cls: Type[T], cloud_path: CloudPathT, *args: Any, **kwargs: Any) -> CloudPathT:
-        ...
+    def __call__(
+        cls: Type[T], cloud_path: CloudPathT, *args: Any, **kwargs: Any
+    ) -> CloudPathT: ...
 
     @overload
     def __call__(
         cls: Type[T], cloud_path: Union[str, "CloudPath"], *args: Any, **kwargs: Any
-    ) -> T:
-        ...
+    ) -> T: ...
 
     def __call__(
         cls: Type[T], cloud_path: Union[str, CloudPathT], *args: Any, **kwargs: Any
@@ -274,13 +274,13 @@ def _no_prefix_no_drive(self) -> str:
 
     @overload
     @classmethod
-    def is_valid_cloudpath(cls, path: "CloudPath", raise_on_error: bool = ...) -> TypeGuard[Self]:
-        ...
+    def is_valid_cloudpath(
+        cls, path: "CloudPath", raise_on_error: bool = ...
+    ) -> TypeGuard[Self]: ...
 
     @overload
     @classmethod
-    def is_valid_cloudpath(cls, path: str, raise_on_error: bool = ...) -> bool:
-        ...
+    def is_valid_cloudpath(cls, path: str, raise_on_error: bool = ...) -> bool: ...
 
     @classmethod
     def is_valid_cloudpath(
@@ -940,24 +940,21 @@ def copy(
         self,
         destination: Self,
         force_overwrite_to_cloud: bool = False,
-    ) -> Self:
-        ...
+    ) -> Self: ...
 
     @overload
     def copy(
         self,
         destination: Path,
         force_overwrite_to_cloud: bool = False,
-    ) -> Path:
-        ...
+    ) -> Path: ...
 
     @overload
     def copy(
         self,
         destination: str,
         force_overwrite_to_cloud: bool = False,
-    ) -> Union[Path, "CloudPath"]:
-        ...
+    ) -> Union[Path, "CloudPath"]: ...
 
     def copy(self, destination, force_overwrite_to_cloud=False):
         """Copy self to destination folder of file, if self is a file."""
@@ -1007,8 +1004,7 @@ def copytree(
         destination: Self,
         force_overwrite_to_cloud: bool = False,
         ignore: Optional[Callable[[str, Iterable[str]], Container[str]]] = None,
-    ) -> Self:
-        ...
+    ) -> Self: ...
 
     @overload
     def copytree(
@@ -1016,8 +1012,7 @@ def copytree(
         destination: Path,
         force_overwrite_to_cloud: bool = False,
         ignore: Optional[Callable[[str, Iterable[str]], Container[str]]] = None,
-    ) -> Path:
-        ...
+    ) -> Path: ...
 
     @overload
     def copytree(
@@ -1025,8 +1020,7 @@ def copytree(
         destination: str,
         force_overwrite_to_cloud: bool = False,
         ignore: Optional[Callable[[str, Iterable[str]], Container[str]]] = None,
-    ) -> Union[Path, "CloudPath"]:
-        ...
+    ) -> Union[Path, "CloudPath"]: ...
 
     def copytree(self, destination, force_overwrite_to_cloud=False, ignore=None):
         """Copy self to a directory, if self is a directory."""
diff --git a/requirements-dev.txt b/requirements-dev.txt
index ade42b38..19730fdd 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 -e .[all]
 
-black[jupyter]
+black[jupyter]>=24.1.0;python_version>='3.8'
 build
 flake8
 ipytest
@@ -19,9 +19,8 @@ pandas
 pillow
 psutil
 pydantic
-pytest
-# pytest-cases
-git+https://github.com/jayqi/python-pytest-cases@packaging-version
+pytest<8
+pytest-cases>=3.7.0
 pytest-cov
 pytest-xdist
 python-dotenv
diff --git a/setup.cfg b/setup.cfg
index 46fa9c4e..0e0037e2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [flake8]
-ignore = E731,E266,E501,C901,W503,E203
+ignore = E731,E266,E501,C901,W503,E203,E704
 max-line-length = 99
 exclude =
     .git,
diff --git a/tests/mock_clients/mock_azureblob.py b/tests/mock_clients/mock_azureblob.py
index 198badae..689da039 100644
--- a/tests/mock_clients/mock_azureblob.py
+++ b/tests/mock_clients/mock_azureblob.py
@@ -96,9 +96,9 @@ def upload_blob(self, data, overwrite, content_settings=None):
         path.write_bytes(data)
 
         if content_settings is not None:
-            self.service_client.metadata_cache[
-                self.root / self.key
-            ] = content_settings.content_type
+            self.service_client.metadata_cache[self.root / self.key] = (
+                content_settings.content_type
+            )
 
 
 class MockStorageStreamDownloader:
diff --git a/tests/mock_clients/mock_s3.py b/tests/mock_clients/mock_s3.py
index 5476989d..fc1ede18 100644
--- a/tests/mock_clients/mock_s3.py
+++ b/tests/mock_clients/mock_s3.py
@@ -259,9 +259,11 @@ def paginate(self, Bucket=None, Prefix="", Delimiter=None):
             files = [
                 {
                     "Key": str(_.relative_to(self.root).as_posix()),
-                    "Size": 123
-                    if not _.relative_to(self.root).exists()
-                    else _.relative_to(self.root).stat().st_size,
+                    "Size": (
+                        123
+                        if not _.relative_to(self.root).exists()
+                        else _.relative_to(self.root).stat().st_size
+                    ),
                 }
                 for _ in page
                 if _.is_file()