diff --git a/autoapi/directives.py b/autoapi/directives.py
index ee5e3ec..121803b 100644
--- a/autoapi/directives.py
+++ b/autoapi/directives.py
@@ -41,7 +41,6 @@ class AutoapiSummary(Autosummary):
 
 
 class NestedParse(Directive):
-
     """Nested parsing to remove the first heading of included rST
 
     This is used to handle the case where we like to remove user supplied
diff --git a/autoapi/extension.py b/autoapi/extension.py
index 8fa740a..a95e512 100644
--- a/autoapi/extension.py
+++ b/autoapi/extension.py
@@ -2,6 +2,7 @@
 
 This extension allows you to automagically generate API documentation from your project.
 """
+
 import io
 import os
 import shutil
diff --git a/autoapi/mappers/base.py b/autoapi/mappers/base.py
index 47dae64..2d92cec 100644
--- a/autoapi/mappers/base.py
+++ b/autoapi/mappers/base.py
@@ -20,7 +20,6 @@ Path = namedtuple("Path", ["absolute", "relative"])
 
 
 class PythonMapperBase:
-
     """Base object for JSON -> Python object mapping.
 
     Subclasses of this object will handle their language specific JSON input,
@@ -163,7 +162,6 @@ class PythonMapperBase:
 
 
 class SphinxMapperBase:
-
     """Base class for mapping `PythonMapperBase` objects to Sphinx.
 
     Args:
diff --git a/autoapi/mappers/python/mapper.py b/autoapi/mappers/python/mapper.py
index 90db866..d7a9db9 100644
--- a/autoapi/mappers/python/mapper.py
+++ b/autoapi/mappers/python/mapper.py
@@ -216,7 +216,6 @@ def _link_objs(value):
 
 
 class PythonSphinxMapper(SphinxMapperBase):
-
     """Auto API domain handler for Python
 
     Parses directly from Python files.
diff --git a/docs/changes/+af2042c3.misc b/docs/changes/+af2042c3.misc
new file mode 100644
index 0000000..aad730b
--- /dev/null
+++ b/docs/changes/+af2042c3.misc
@@ -0,0 +1 @@
+Reformatted to latest stable black style.
\ No newline at end of file
diff --git a/tests/python/py3example/example/example.py b/tests/python/py3example/example/example.py
index 816d72e..ebe26c0 100644
--- a/tests/python/py3example/example/example.py
+++ b/tests/python/py3example/example/example.py
@@ -51,26 +51,21 @@ mixed_list: List[Union[str, int]] = [1, "two", 3]
 "This is mixed"
 
 
-def f2(not_yet_a: "A") -> int:
-    ...
+def f2(not_yet_a: "A") -> int: ...
 
 
-def f3(imported: B) -> B:
-    ...
+def f3(imported: B) -> B: ...
 
 
-class MyGeneric(Generic[T, U]):
-    ...
+class MyGeneric(Generic[T, U]): ...
 
 
 @overload
-def overloaded_func(a: float) -> float:
-    ...
+def overloaded_func(a: float) -> float: ...
 
 
 @typing.overload
-def overloaded_func(a: str) -> str:
-    ...
+def overloaded_func(a: str) -> str: ...
 
 
 def overloaded_func(a: Union[float, str]) -> Union[float, str]:
@@ -79,8 +74,7 @@ def overloaded_func(a: Union[float, str]) -> Union[float, str]:
 
 
 @overload
-def undoc_overloaded_func(a: str) -> str:
-    ...
+def undoc_overloaded_func(a: str) -> str: ...
 
 
 def undoc_overloaded_func(a: str) -> str:
@@ -112,33 +106,28 @@ class A:
         return "method"
 
     @overload
-    def overloaded_method(self, a: float) -> float:
-        ...
+    def overloaded_method(self, a: float) -> float: ...
 
     @typing.overload
-    def overloaded_method(self, a: str) -> str:
-        ...
+    def overloaded_method(self, a: str) -> str: ...
 
     def overloaded_method(self, a: Union[float, str]) -> Union[float, str]:
         """Overloaded method"""
         return a * 2
 
     @overload
-    def undoc_overloaded_method(self, a: float) -> float:
-        ...
+    def undoc_overloaded_method(self, a: float) -> float: ...
 
     def undoc_overloaded_method(self, a: float) -> float:
         return a * 2
 
     @typing.overload
     @classmethod
-    def overloaded_class_method(cls, a: float) -> float:
-        ...
+    def overloaded_class_method(cls, a: float) -> float: ...
 
     @overload
     @classmethod
-    def overloaded_class_method(cls, a: str) -> str:
-        ...
+    def overloaded_class_method(cls, a: str) -> str: ...
 
     @classmethod
     def overloaded_class_method(cls, a: Union[float, str]) -> Union[float, str]:
@@ -148,23 +137,18 @@ class A:
 
 class C:
     @overload
-    def __init__(self, a: int) -> None:
-        ...
+    def __init__(self, a: int) -> None: ...
 
     @typing.overload
-    def __init__(self, a: float) -> None:
-        ...
+    def __init__(self, a: float) -> None: ...
 
-    def __init__(self, a: str):
-        ...
+    def __init__(self, a: str): ...
 
 
 class D(C):
-    class Da:
-        ...
+    class Da: ...
 
-    class DB(Da):
-        ...
+    class DB(Da): ...
 
     ...
 
@@ -184,5 +168,4 @@ async def async_function(wait: bool) -> int:
 global_a: A = A()
 
 
-class SomeMetaclass(type):
-    ...
+class SomeMetaclass(type): ...
diff --git a/tests/python/pyiexample/example/example.pyi b/tests/python/pyiexample/example/example.pyi
index d01e3e7..f0c7bb4 100644
--- a/tests/python/pyiexample/example/example.pyi
+++ b/tests/python/pyiexample/example/example.pyi
@@ -26,12 +26,15 @@ class Foo(object):
         def foo():
             """The foo class method"""
             ...
+
     def __init__(self, attr):
         """Constructor docstring"""
         ...
+
     def method_okay(self, foo=None, bar=None):
         """This method should parse okay"""
         ...
+
     def method_multiline(self, foo=None, bar=None, baz=None):
         """This is on multiple lines, but should parse okay too
 
@@ -39,4 +42,5 @@ class Foo(object):
         definitions are covered in the way we're anticipating here
         """
         ...
+
     def method_without_docstring(self): ...
diff --git a/tests/python/pypackageexample/example/__init__.py b/tests/python/pypackageexample/example/__init__.py
index 1da5b3a..44c208d 100644
--- a/tests/python/pypackageexample/example/__init__.py
+++ b/tests/python/pypackageexample/example/__init__.py
@@ -1,4 +1,5 @@
 """This is a docstring."""
+
 from . import foo