diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eb42137..7e37cf4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,11 +27,13 @@ jobs:
     - name: Install checkers
       run: |
         python -mpip install --upgrade pip
-        python -mpip install black flake8 mypy types-PyYaml
-    - name: flake
-      run: flake8 .
-    - name: black
-      run: black --check --diff --color --quiet .
+        python -mpip install mypy types-PyYaml
+    - name: ruff check
+      uses: chartboost/ruff-action@v1
+    - name: ruff format
+      uses: chartboost/ruff-action@v1
+      with:
+        args: format --diff
     - name: mypy
       run: mypy
 
diff --git a/src/ua_parser/__init__.py b/src/ua_parser/__init__.py
index 46cae5b..5fee93f 100644
--- a/src/ua_parser/__init__.py
+++ b/src/ua_parser/__init__.py
@@ -45,10 +45,8 @@
     "parse_user_agent",
 ]
 
-VERSION = (1, 0, 0)
-
 import contextlib
-from typing import Callable, Optional, Type
+from typing import Callable, Optional
 
 from .core import (
     DefaultedParseResult,
@@ -73,6 +71,7 @@
     from .re2 import Parser as Re2Parser
 
 
+VERSION = (1, 0, 0)
 parser: Parser
 
 
diff --git a/src/ua_parser/basic.py b/src/ua_parser/basic.py
index 828a6cb..58b4f6d 100644
--- a/src/ua_parser/basic.py
+++ b/src/ua_parser/basic.py
@@ -1,20 +1,15 @@
-import io
-import os
 from operator import methodcaller
 from typing import List
 
 from .core import (
     Device,
-    DeviceMatcher,
     Domain,
     Matcher,
     Matchers,
     OS,
-    OSMatcher,
     Parser as AbstractParser,
     PartialParseResult,
     UserAgent,
-    UserAgentMatcher,
 )
 
 
diff --git a/src/ua_parser/caching.py b/src/ua_parser/caching.py
index 6ae81ae..9128cb2 100644
--- a/src/ua_parser/caching.py
+++ b/src/ua_parser/caching.py
@@ -1,7 +1,7 @@
 import abc
 from collections import OrderedDict
 import threading
-from typing import Callable, ContextManager, Dict, Optional, MutableMapping
+from typing import Dict, Optional
 
 from .core import Parser, Domain, PartialParseResult
 
diff --git a/src/ua_parser/core.py b/src/ua_parser/core.py
index 15d86e9..2cd33e4 100644
--- a/src/ua_parser/core.py
+++ b/src/ua_parser/core.py
@@ -225,11 +225,13 @@ def _replacer(repl: str, m: Match[str]) -> Optional[str]:
 
 class Matcher(abc.ABC, Generic[T]):
     @abc.abstractmethod
-    def __call__(self, ua: str) -> Optional[T]: ...
+    def __call__(self, ua: str) -> Optional[T]:
+        ...
 
     @property
     @abc.abstractmethod
-    def pattern(self) -> str: ...
+    def pattern(self) -> str:
+        ...
 
     @property
     def flags(self) -> int:
diff --git a/src/ua_parser/loaders.py b/src/ua_parser/loaders.py
index 7743117..9a38220 100644
--- a/src/ua_parser/loaders.py
+++ b/src/ua_parser/loaders.py
@@ -165,9 +165,8 @@ def load_lazy(d: MatchersData) -> Matchers:
 
 
 class FileLoader(Protocol):
-    def __call__(
-        self, path: PathOrFile, loader: DataLoader = load_data
-    ) -> Matchers: ...
+    def __call__(self, path: PathOrFile, loader: DataLoader = load_data) -> Matchers:
+        ...
 
 
 def load_json(f: PathOrFile, loader: DataLoader = load_data) -> Matchers:
diff --git a/src/ua_parser/re2.py b/src/ua_parser/re2.py
index 867edfa..5ff6724 100644
--- a/src/ua_parser/re2.py
+++ b/src/ua_parser/re2.py
@@ -1,9 +1,7 @@
 from __future__ import annotations
 
-import io
-import os
 import re
-from typing import List, Tuple, Union
+from typing import List
 
 import re2  # type: ignore
 
@@ -16,9 +14,6 @@
     Matchers,
     OS,
     UserAgent,
-    UserAgentMatcher,
-    OSMatcher,
-    DeviceMatcher,
 )
 
 
diff --git a/src/ua_parser/threaded.py b/src/ua_parser/threaded.py
index 4ff5d1f..6be4158 100644
--- a/src/ua_parser/threaded.py
+++ b/src/ua_parser/threaded.py
@@ -1,5 +1,4 @@
 import argparse
-import itertools
 import os
 import random
 import threading
@@ -11,7 +10,6 @@
     BasicParser,
     CachingParser,
     Clearing,
-    Domain,
     Locking,
     LRU,
     Parser,
diff --git a/src/ua_parser/user_agent_parser.py b/src/ua_parser/user_agent_parser.py
index 7a5ba12..25a8a8c 100644
--- a/src/ua_parser/user_agent_parser.py
+++ b/src/ua_parser/user_agent_parser.py
@@ -1,7 +1,7 @@
 import os
 import re
 import warnings
-from typing import *
+from typing import Any, Dict, Optional, Tuple
 
 
 class UserAgentParser(object):
@@ -21,7 +21,9 @@ def __init__(
         self.v1_replacement = v1_replacement
         self.v2_replacement = v2_replacement
 
-    def Parse(self, user_agent_string: str) -> Tuple[
+    def Parse(
+        self, user_agent_string: str
+    ) -> Tuple[
         Optional[str],
         Optional[str],
         Optional[str],
@@ -81,7 +83,9 @@ def __init__(
         self.os_v3_replacement = os_v3_replacement
         self.os_v4_replacement = os_v4_replacement
 
-    def Parse(self, user_agent_string: str) -> Tuple[
+    def Parse(
+        self, user_agent_string: str
+    ) -> Tuple[
         Optional[str],
         Optional[str],
         Optional[str],
@@ -153,7 +157,9 @@ def __init__(
         self.brand_replacement = brand_replacement
         self.model_replacement = model_replacement
 
-    def Parse(self, user_agent_string: str) -> Tuple[
+    def Parse(
+        self, user_agent_string: str
+    ) -> Tuple[
         Optional[str],
         Optional[str],
         Optional[str],
diff --git a/tox.ini b/tox.ini
index 18126ce..3245bc6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,13 +30,13 @@ deps =
 
 [testenv:flake8]
 package = skip
-deps = flake8
-commands = flake8 {posargs}
+deps = ruff
+commands = ruff check {posargs}
 
 [testenv:black]
 package = skip
-deps = black
-commands = black --check --diff {posargs:.}
+deps = ruff
+commands = ruff format --diff {posargs:.}
 
 [testenv:typecheck]
 package = skip