diff --git a/pgtoolkit/_helpers.py b/pgtoolkit/_helpers.py
index 32b77e3..01ae2b9 100644
--- a/pgtoolkit/_helpers.py
+++ b/pgtoolkit/_helpers.py
@@ -53,23 +53,21 @@ def __exit__(self, *a: Any) -> None:
 
 
 @overload
-def open_or_return(fo_or_path: None, mode: str = "r") -> NoReturn:
-    ...
+def open_or_return(fo_or_path: None, mode: str = "r") -> NoReturn: ...
 
 
 @overload
-def open_or_return(fo_or_path: str, mode: str = "r") -> IO[str]:
-    ...
+def open_or_return(fo_or_path: str, mode: str = "r") -> IO[str]: ...
 
 
 @overload
-def open_or_return(fo_or_path: Path, mode: str = "r") -> IO[str]:
-    ...
+def open_or_return(fo_or_path: Path, mode: str = "r") -> IO[str]: ...
 
 
 @overload
-def open_or_return(fo_or_path: IO[str], mode: str = "r") -> PassthroughManager[IO[str]]:
-    ...
+def open_or_return(
+    fo_or_path: IO[str], mode: str = "r"
+) -> PassthroughManager[IO[str]]: ...
 
 
 def open_or_return(
diff --git a/pgtoolkit/conf.py b/pgtoolkit/conf.py
index 224b206..a141cb8 100644
--- a/pgtoolkit/conf.py
+++ b/pgtoolkit/conf.py
@@ -38,7 +38,6 @@
 
 """
 
-
 import contextlib
 import copy
 import enum
@@ -462,6 +461,7 @@ class Configuration:
     .. automethod:: save
 
     """  # noqa
+
     lines: list[str]
     entries: dict[str, Entry]
     path: Optional[str]
diff --git a/pgtoolkit/ctl.py b/pgtoolkit/ctl.py
index 8d0f580..9c7830c 100644
--- a/pgtoolkit/ctl.py
+++ b/pgtoolkit/ctl.py
@@ -51,8 +51,7 @@ def __call__(
         capture_output: bool = False,
         check: bool = False,
         **kwargs: Any,
-    ) -> CompletedProcess:
-        ...
+    ) -> CompletedProcess: ...
 
 
 class AsyncCommandRunner(Protocol):
@@ -71,8 +70,7 @@ async def __call__(
         capture_output: bool = False,
         check: bool = False,
         **kwargs: Any,
-    ) -> CompletedProcess:
-        ...
+    ) -> CompletedProcess: ...
 
 
 def run_command(
diff --git a/pgtoolkit/service.py b/pgtoolkit/service.py
index 5213eb6..0b1dbd3 100644
--- a/pgtoolkit/service.py
+++ b/pgtoolkit/service.py
@@ -88,7 +88,6 @@
 
 """
 
-
 import os
 import sys
 from collections.abc import Iterable, MutableMapping
diff --git a/requirements-ci.txt b/requirements-ci.txt
index 739052c..899ecf0 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -1,4 +1,4 @@
-black>=23.1.0
+black>=24.2.0
 check-manifest
 codecov
 docutils
diff --git a/setup.cfg b/setup.cfg
index 8e99ed4..0c0a211 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -11,6 +11,8 @@ ignore =
   E501,
   # missing whitespace around arithmetic operator
   E226,
+  # multiple statements on one line (def)
+  E704,
   # line break before binary operator
   W503,