diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7c6175e0..99bb98bb 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,7 +13,7 @@ repos:
     hooks:
     -   id: check-yaml
 -   repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.2.2
+    rev: v0.3.2
     hooks:
       - id: ruff
         args: [ --fix ]
@@ -26,7 +26,7 @@ repos:
         args: ["--ignore", "D001"]
 
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: 'v1.8.0'
+    rev: 'v1.9.0'
     hooks:
     -   id: mypy
         additional_dependencies:
diff --git a/doc/example/popen_read_multiple.py b/doc/example/popen_read_multiple.py
index 571faf34..43d0ed04 100644
--- a/doc/example/popen_read_multiple.py
+++ b/doc/example/popen_read_multiple.py
@@ -3,6 +3,7 @@
 
 reading results from possibly blocking code running in sub processes.
 """
+
 import execnet
 
 NUM_PROCESSES = 5
diff --git a/doc/example/redirect_remote_output.py b/doc/example/redirect_remote_output.py
index d5fb43e0..0fea4ebb 100644
--- a/doc/example/redirect_remote_output.py
+++ b/doc/example/redirect_remote_output.py
@@ -7,6 +7,7 @@
 - setting a callback for receiving channel data
 
 """
+
 import execnet
 
 gw = execnet.makegateway()
diff --git a/doc/example/svn-sync-repo.py b/doc/example/svn-sync-repo.py
index 24e7bd58..4377dc3f 100644
--- a/doc/example/svn-sync-repo.py
+++ b/doc/example/svn-sync-repo.py
@@ -5,6 +5,7 @@
 uses execnet.
 
 """
+
 import os
 import pathlib
 import subprocess
diff --git a/doc/example/sysinfo.py b/doc/example/sysinfo.py
index f13d1199..b3fa2d5e 100644
--- a/doc/example/sysinfo.py
+++ b/doc/example/sysinfo.py
@@ -5,6 +5,7 @@
 
 (c) Holger Krekel, MIT license
 """
+
 import optparse
 import re
 import sys
diff --git a/src/execnet/__init__.py b/src/execnet/__init__.py
index d22eb1af..a266bded 100644
--- a/src/execnet/__init__.py
+++ b/src/execnet/__init__.py
@@ -6,6 +6,7 @@
 
 (c) 2012, Holger Krekel and others
 """
+
 from ._version import version as __version__
 from .gateway_base import DataFormatError
 from .gateway_base import RemoteError
diff --git a/src/execnet/gateway.py b/src/execnet/gateway.py
index c7a64153..ec197398 100644
--- a/src/execnet/gateway.py
+++ b/src/execnet/gateway.py
@@ -2,6 +2,7 @@
 gateway code for initiating popen, socket and ssh connections.
 (c) 2004-2013, Holger Krekel and others
 """
+
 from __future__ import annotations
 
 import inspect
@@ -48,9 +49,7 @@ def __repr__(self) -> str:
         except AttributeError:
             r = "uninitialized"
             i = "no"
-        return "<{} id={!r} {}, {} model, {} active channels>".format(
-            self.__class__.__name__, self.id, r, self.execmodel.backend, i
-        )
+        return f"<{self.__class__.__name__} id={self.id!r} {r}, {self.execmodel.backend} model, {i} active channels>"
 
     def exit(self) -> None:
         """trigger gateway exit.  Defer waiting for finishing
@@ -166,8 +165,7 @@ def __repr__(self) -> str:
 
     if TYPE_CHECKING:
 
-        def __getattr__(self, name: str) -> Any:
-            ...
+        def __getattr__(self, name: str) -> Any: ...
 
 
 RemoteStatus = RInfo
diff --git a/src/execnet/gateway_base.py b/src/execnet/gateway_base.py
index 494a6839..d88e6585 100644
--- a/src/execnet/gateway_base.py
+++ b/src/execnet/gateway_base.py
@@ -11,6 +11,7 @@
     - Ronny Pfannschmidt
     - many others
 """
+
 from __future__ import annotations
 
 import abc
@@ -32,51 +33,39 @@
 
 
 class WriteIO(Protocol):
-    def write(self, data: bytes, /) -> None:
-        ...
+    def write(self, data: bytes, /) -> None: ...
 
 
 class ReadIO(Protocol):
-    def read(self, numbytes: int, /) -> bytes:
-        ...
+    def read(self, numbytes: int, /) -> bytes: ...
 
 
 class IO(Protocol):
     execmodel: ExecModel
 
-    def read(self, numbytes: int, /) -> bytes:
-        ...
+    def read(self, numbytes: int, /) -> bytes: ...
 
-    def write(self, data: bytes, /) -> None:
-        ...
+    def write(self, data: bytes, /) -> None: ...
 
-    def close_read(self) -> None:
-        ...
+    def close_read(self) -> None: ...
 
-    def close_write(self) -> None:
-        ...
+    def close_write(self) -> None: ...
 
-    def wait(self) -> int | None:
-        ...
+    def wait(self) -> int | None: ...
 
-    def kill(self) -> None:
-        ...
+    def kill(self) -> None: ...
 
 
 class Event(Protocol):
     """Protocol for types which look like threading.Event."""
 
-    def is_set(self) -> bool:
-        ...
+    def is_set(self) -> bool: ...
 
-    def set(self) -> None:
-        ...
+    def set(self) -> None: ...
 
-    def clear(self) -> None:
-        ...
+    def clear(self) -> None: ...
 
-    def wait(self, timeout: float | None = None) -> bool:
-        ...
+    def wait(self, timeout: float | None = None) -> bool: ...
 
 
 class ExecModel(metaclass=abc.ABCMeta):
@@ -973,9 +962,9 @@ def reconfigure(
 
 class ChannelFactory:
     def __init__(self, gateway: BaseGateway, startcount: int = 1) -> None:
-        self._channels: weakref.WeakValueDictionary[
-            int, Channel
-        ] = weakref.WeakValueDictionary()
+        self._channels: weakref.WeakValueDictionary[int, Channel] = (
+            weakref.WeakValueDictionary()
+        )
         # Channel ID => (callback, end marker, strconfig)
         self._callbacks: dict[
             int, tuple[Callable[[Any], Any], object, tuple[bool, bool]]
diff --git a/src/execnet/gateway_bootstrap.py b/src/execnet/gateway_bootstrap.py
index 6ea7113b..165e8cad 100644
--- a/src/execnet/gateway_bootstrap.py
+++ b/src/execnet/gateway_bootstrap.py
@@ -1,6 +1,7 @@
 """
 code to initialize the remote side of a gateway once the io is created
 """
+
 from __future__ import annotations
 
 import inspect
diff --git a/src/execnet/gateway_io.py b/src/execnet/gateway_io.py
index 37b00de0..a29fcc78 100644
--- a/src/execnet/gateway_io.py
+++ b/src/execnet/gateway_io.py
@@ -3,6 +3,7 @@
 
 creates io instances used for gateway io
 """
+
 from __future__ import annotations
 
 import shlex
diff --git a/src/execnet/multi.py b/src/execnet/multi.py
index 6ac76884..2b447d57 100644
--- a/src/execnet/multi.py
+++ b/src/execnet/multi.py
@@ -3,6 +3,7 @@
 
 (c) 2008-2014, Holger Krekel and others
 """
+
 from __future__ import annotations
 
 import atexit
diff --git a/src/execnet/rsync.py b/src/execnet/rsync.py
index 648021d9..6e14fef5 100644
--- a/src/execnet/rsync.py
+++ b/src/execnet/rsync.py
@@ -3,6 +3,7 @@
 
 (c) 2006-2009, Armin Rigo, Holger Krekel, Maciej Fijalkowski
 """
+
 from __future__ import annotations
 
 import os
diff --git a/src/execnet/rsync_remote.py b/src/execnet/rsync_remote.py
index 24dccc9c..b560df75 100644
--- a/src/execnet/rsync_remote.py
+++ b/src/execnet/rsync_remote.py
@@ -1,6 +1,7 @@
 """
 (c) 2006-2013, Armin Rigo, Holger Krekel, Maciej Fijalkowski
 """
+
 from __future__ import annotations
 
 from typing import TYPE_CHECKING
diff --git a/src/execnet/script/quitserver.py b/src/execnet/script/quitserver.py
index 1ea3fccd..4c94c383 100644
--- a/src/execnet/script/quitserver.py
+++ b/src/execnet/script/quitserver.py
@@ -1,8 +1,9 @@
 """
 
-  send a "quit" signal to a remote server
+send a "quit" signal to a remote server
 
 """
+
 from __future__ import annotations
 
 import socket
diff --git a/src/execnet/script/shell.py b/src/execnet/script/shell.py
index 7f4bc02b..569d4042 100644
--- a/src/execnet/script/shell.py
+++ b/src/execnet/script/shell.py
@@ -4,6 +4,7 @@
 
 for injection into startserver.py
 """
+
 import os
 import select
 import socket
diff --git a/src/execnet/script/socketserver.py b/src/execnet/script/socketserver.py
index 34dfc0a3..b58d1a4c 100644
--- a/src/execnet/script/socketserver.py
+++ b/src/execnet/script/socketserver.py
@@ -1,14 +1,15 @@
 #! /usr/bin/env python
 """
-    start socket based minimal readline exec server
+start socket based minimal readline exec server
 
-    it can exeuted in 2 modes of operation
+it can exeuted in 2 modes of operation
 
-    1. as normal script, that listens for new connections
+1. as normal script, that listens for new connections
 
-    2. via existing_gateway.remote_exec (as imported module)
+2. via existing_gateway.remote_exec (as imported module)
 
 """
+
 # this part of the program only executes on the server side
 #
 from __future__ import annotations
diff --git a/src/execnet/script/socketserverservice.py b/src/execnet/script/socketserverservice.py
index cc525e94..9c18c12c 100644
--- a/src/execnet/script/socketserverservice.py
+++ b/src/execnet/script/socketserverservice.py
@@ -5,6 +5,7 @@
  python socketserverservice.py register
  net start ExecNetSocketServer
 """
+
 import sys
 import threading
 
diff --git a/src/execnet/xspec.py b/src/execnet/xspec.py
index 5bc437ea..0cbf3de7 100644
--- a/src/execnet/xspec.py
+++ b/src/execnet/xspec.py
@@ -1,6 +1,7 @@
 """
 (c) 2008-2013, holger krekel
 """
+
 from __future__ import annotations
 
 
diff --git a/testing/test_channel.py b/testing/test_channel.py
index 67039825..f500f117 100644
--- a/testing/test_channel.py
+++ b/testing/test_channel.py
@@ -1,6 +1,7 @@
 """
 mostly functional tests of gateways.
 """
+
 from __future__ import annotations
 
 import time
diff --git a/testing/test_gateway.py b/testing/test_gateway.py
index e507a935..4291404e 100644
--- a/testing/test_gateway.py
+++ b/testing/test_gateway.py
@@ -1,6 +1,7 @@
 """
 mostly functional tests of gateways.
 """
+
 from __future__ import annotations
 
 import os
diff --git a/testing/test_multi.py b/testing/test_multi.py
index 445b3f15..edc93037 100644
--- a/testing/test_multi.py
+++ b/testing/test_multi.py
@@ -1,6 +1,7 @@
 """
-    tests for multi channels and gateway Groups
+tests for multi channels and gateway Groups
 """
+
 from __future__ import annotations
 
 import gc