diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index d4c53cb..e29c535 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -8,9 +8,6 @@ updates:
       dev-dependencies:
         patterns:
           - "pytest*"
-          - "flake8*"
-          - "black"
-          - "isort"
           - "ruff"
           - "refurb"
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7b81803..036e59c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v4
@@ -42,12 +42,8 @@ jobs:
     - name: Install dependencies
       run: poetry install
 
-    - name: Lint with flake8
-      run: |
-        # stop the build if there are Python syntax errors or undefined names
-        poetry run flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        poetry run flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Lint with ruff
+      run: poetry run ruff check . --statistics
 
     - name: Test with pytest
       run: poetry run python -m pytest --cov=.
diff --git a/alternative_encodings/__init__.py b/alternative_encodings/__init__.py
index c703ce8..e7ff707 100644
--- a/alternative_encodings/__init__.py
+++ b/alternative_encodings/__init__.py
@@ -1,10 +1,7 @@
-from . import cp859
-from . import cp866i
-from . import romaji
-from . import viscii
+from . import cp859, cp866i, romaji, viscii
 
 
-def register_all():
+def register_all() -> None:
     cp859.register()
     cp866i.register()
     romaji.register()
diff --git a/alternative_encodings/common.py b/alternative_encodings/common.py
index 9ac44d3..99e44df 100644
--- a/alternative_encodings/common.py
+++ b/alternative_encodings/common.py
@@ -1,41 +1,45 @@
 import codecs
+from typing import TYPE_CHECKING, Union
 
+if TYPE_CHECKING:
+    from _codecs import _EncodingMap
 
-def get_codec(encoding_table, decoding_table):
+
+def get_codec(encoding_table: Union[dict[int, int], "_EncodingMap"], decoding_table: str) -> type[codecs.Codec]:
     class Codec(codecs.Codec):
-        def encode(self, input, errors="strict"):
-            return codecs.charmap_encode(input, errors, encoding_table)
+        def encode(self, input_string: str, errors: str = "strict") -> tuple[bytes, int]:
+            return codecs.charmap_encode(input_string, errors, encoding_table)
 
-        def decode(self, input, errors="strict"):
-            return codecs.charmap_decode(input, errors, decoding_table)
+        def decode(self, input_bytes: bytes, errors: str = "strict") -> tuple[str, int]:
+            return codecs.charmap_decode(input_bytes, errors, decoding_table)
 
     return Codec
 
 
-def get_incremental_encoder(encoding_table):
+def get_incremental_encoder(encoding_table: Union[dict[int, int], "_EncodingMap"]) -> type[codecs.IncrementalEncoder]:
     class IncrementalEncoder(codecs.IncrementalEncoder):
-        def encode(self, input, final=False):
-            return codecs.charmap_encode(input, self.errors, encoding_table)[0]
+        def encode(self, input_string: str, _final: bool = False) -> bytes:  # noqa: FBT001, FBT002
+            return codecs.charmap_encode(input_string, self.errors, encoding_table)[0]
 
     return IncrementalEncoder
 
 
-def get_incremental_decoder(decoding_table):
+def get_incremental_decoder(decoding_table: str) -> type[codecs.IncrementalDecoder]:
     class IncrementalDecoder(codecs.IncrementalDecoder):
-        def decode(self, input, final=False):
-            return codecs.charmap_decode(input, self.errors, decoding_table)[0]
+        def decode(self, input_bytes: bytes, _final: bool = False) -> str:  # noqa: FBT001, FBT002
+            return codecs.charmap_decode(input_bytes, self.errors, decoding_table)[0]
 
     return IncrementalDecoder
 
 
-def get_stream_writer(codec):
+def get_stream_writer(codec: type[codecs.Codec]) -> type[codecs.Codec, codecs.StreamWriter]:
     class StreamWriter(codec, codecs.StreamWriter):
         pass
 
     return StreamWriter
 
 
-def get_stream_reader(codec):
+def get_stream_reader(codec: type[codecs.Codec]) -> type[codecs.Codec, codecs.StreamReader]:
     class StreamReader(codec, codecs.StreamReader):
         pass
 
diff --git a/alternative_encodings/cp859.py b/alternative_encodings/cp859.py
index 6e2e39c..04a1b02 100644
--- a/alternative_encodings/cp859.py
+++ b/alternative_encodings/cp859.py
@@ -1,6 +1,13 @@
 import codecs
-
-from .common import get_codec, get_incremental_decoder, get_incremental_encoder, get_stream_reader, get_stream_writer
+import contextlib
+
+from .common import (
+    get_codec,
+    get_incremental_decoder,
+    get_incremental_encoder,
+    get_stream_reader,
+    get_stream_writer,
+)
 
 # Decoding Table
 
@@ -14,7 +21,7 @@
     "`abcdefghijklmno"
     "pqrstuvwxyz{|}~\x7f"
     "ÇüéâäàåçêëèïîìÄÅ"
-    "ÉæÆôöòûùÿÖÜø£Ø׃"
+    "ÉæÆôöòûùÿÖÜø£Ø׃"  # noqa: RUF001
     "áíóúñѪº¿®¬œŒ¡«»"
     "░▒▓│┤ÁÂÀ©╣║╗╝¢¥┐"
     "└┴┬├─┼ãÃ╚╔╩╦╠═╬¤"
@@ -51,19 +58,17 @@
 )
 
 
-def search_function(encoding):
+def search_function(encoding: str) -> codecs.CodecInfo | None:
     if regentry.name == encoding:
         return regentry
 
     return None
 
 
-def register():
+def register() -> None:
     codecs.register(search_function)
 
 
-def unregister():
-    try:
+def unregister() -> None:
+    with contextlib.suppress(AttributeError):
         codecs.unregister(search_function)
-    except AttributeError:
-        pass
diff --git a/alternative_encodings/cp866i.py b/alternative_encodings/cp866i.py
index 59dd46f..bb28fba 100644
--- a/alternative_encodings/cp866i.py
+++ b/alternative_encodings/cp866i.py
@@ -1,18 +1,19 @@
 import codecs
-import encodings.cp866 as cp866
+import contextlib
+from encodings import cp866
 
 
 # Codec APIs
 class Codec(cp866.Codec):
-    def encode(self, input, errors="strict"):
-        input = input.replace("і", "i").replace("І", "I")
-        return super().encode(input, errors)
+    def encode(self, input_string: str, errors: str = "strict") -> bytes:
+        input_string = input_string.replace("і", "i").replace("І", "I")  # noqa: RUF001
+        return super().encode(input_string, errors)
 
 
 class IncrementalEncoder(cp866.IncrementalEncoder):
-    def encode(self, input, final=False):
-        input = input.replace("і", "i").replace("І", "I")
-        return super().encode(input, final)
+    def encode(self, input_string: str, final: bool = False) -> bytes:  # noqa: FBT001, FBT002
+        input_string = input_string.replace("і", "i").replace("І", "I")  # noqa: RUF001
+        return super().encode(input_string, final)
 
 
 IncrementalDecoder = cp866.IncrementalDecoder
@@ -30,19 +31,17 @@ def encode(self, input, final=False):
 )
 
 
-def search_function(encoding):
+def search_function(encoding: str) -> codecs.CodecInfo | None:
     if regentry.name == encoding:
         return regentry
 
     return None
 
 
-def register():
+def register() -> None:
     codecs.register(search_function)
 
 
-def unregister():
-    try:
+def unregister() -> None:
+    with contextlib.suppress(AttributeError):
         codecs.unregister(search_function)
-    except AttributeError:
-        pass
diff --git a/alternative_encodings/romaji.py b/alternative_encodings/romaji.py
index a0c05e5..c6326e3 100644
--- a/alternative_encodings/romaji.py
+++ b/alternative_encodings/romaji.py
@@ -1,14 +1,15 @@
 import codecs
+import contextlib
 import re
-from typing import Iterator
+from collections.abc import Iterator
+from encodings import cp437
 
-import encodings.cp437 as cp437
 import cutlet
 
 katsu = cutlet.Cutlet(use_foreign_spelling=False)
 
 
-def is_translatable(s: str):
+def is_translatable(s: str) -> bool:
     return katsu.romaji(s).strip() != s.strip()
 
 
@@ -19,8 +20,8 @@ def translate_with_spaces(s: str) -> Iterator[str]:
     yield end
 
 
-def iter_translate(input: str) -> Iterator[str]:
-    for line_with_ending in input.splitlines(keepends=True):
+def iter_translate(input_string: str) -> Iterator[str]:
+    for line_with_ending in input_string.splitlines(keepends=True):
         line, end = re.search(r"^(.*?)([\r\n]*)$", line_with_ending, flags=re.MULTILINE + re.DOTALL).groups()
         if line:
             parts = re.split(r"(\b[\w \,]+\b)", line)
@@ -30,18 +31,18 @@ def iter_translate(input: str) -> Iterator[str]:
         yield end
 
 
-def encode(input: str) -> str:
-    return "".join(iter_translate(input))
+def encode(input_string: str) -> str:
+    return "".join(iter_translate(input_string))
 
 
 class Codec(cp437.Codec):
-    def encode(self, input, errors="strict"):
-        return super().encode(encode(input), errors)
+    def encode(self, input_string: str, errors: str = "strict") -> bytes:
+        return super().encode(encode(input_string), errors)
 
 
 class IncrementalEncoder(cp437.IncrementalEncoder):
-    def encode(self, input, final=False):
-        return super().encode(encode(input), final)
+    def encode(self, input_string: str, final: bool = False) -> bytes:  # noqa: FBT001, FBT002
+        return super().encode(encode(input_string), final)
 
 
 IncrementalDecoder = cp437.IncrementalDecoder
@@ -58,19 +59,17 @@ def encode(self, input, final=False):
 )
 
 
-def search_function(encoding):
+def search_function(encoding: str) -> codecs.CodecInfo | None:
     if regentry.name == encoding:
         return regentry
 
     return None
 
 
-def register():
+def register() -> None:
     codecs.register(search_function)
 
 
-def unregister():
-    try:
+def unregister() -> None:
+    with contextlib.suppress(AttributeError):
         codecs.unregister(search_function)
-    except AttributeError:
-        pass
diff --git a/alternative_encodings/viscii.py b/alternative_encodings/viscii.py
index b555061..2887a69 100644
--- a/alternative_encodings/viscii.py
+++ b/alternative_encodings/viscii.py
@@ -1,6 +1,13 @@
 import codecs
-
-from .common import get_codec, get_incremental_decoder, get_incremental_encoder, get_stream_reader, get_stream_writer
+import contextlib
+
+from .common import (
+    get_codec,
+    get_incremental_decoder,
+    get_incremental_encoder,
+    get_stream_reader,
+    get_stream_writer,
+)
 
 # Decoding Table
 
@@ -51,19 +58,17 @@
 )
 
 
-def search_function(encoding):
+def search_function(encoding: str) -> codecs.CodecInfo | None:
     if regentry.name == encoding:
         return regentry
 
     return None
 
 
-def register():
+def register() -> None:
     codecs.register(search_function)
 
 
-def unregister():
-    try:
+def unregister() -> None:
+    with contextlib.suppress(AttributeError):
         codecs.unregister(search_function)
-    except AttributeError:
-        pass
diff --git a/poetry.lock b/poetry.lock
index 6b02869..1d3dc5f 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,64 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
-
-[[package]]
-name = "black"
-version = "24.4.2"
-description = "The uncompromising code formatter."
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "black-24.4.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:dd1b5a14e417189db4c7b64a6540f31730713d173f0b63e55fabd52d61d8fdce"},
-    {file = "black-24.4.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8e537d281831ad0e71007dcdcbe50a71470b978c453fa41ce77186bbe0ed6021"},
-    {file = "black-24.4.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:eaea3008c281f1038edb473c1aa8ed8143a5535ff18f978a318f10302b254063"},
-    {file = "black-24.4.2-cp310-cp310-win_amd64.whl", hash = "sha256:7768a0dbf16a39aa5e9a3ded568bb545c8c2727396d063bbaf847df05b08cd96"},
-    {file = "black-24.4.2-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:257d724c2c9b1660f353b36c802ccece186a30accc7742c176d29c146df6e474"},
-    {file = "black-24.4.2-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:bdde6f877a18f24844e381d45e9947a49e97933573ac9d4345399be37621e26c"},
-    {file = "black-24.4.2-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:e151054aa00bad1f4e1f04919542885f89f5f7d086b8a59e5000e6c616896ffb"},
-    {file = "black-24.4.2-cp311-cp311-win_amd64.whl", hash = "sha256:7e122b1c4fb252fd85df3ca93578732b4749d9be076593076ef4d07a0233c3e1"},
-    {file = "black-24.4.2-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:accf49e151c8ed2c0cdc528691838afd217c50412534e876a19270fea1e28e2d"},
-    {file = "black-24.4.2-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:88c57dc656038f1ab9f92b3eb5335ee9b021412feaa46330d5eba4e51fe49b04"},
-    {file = "black-24.4.2-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:be8bef99eb46d5021bf053114442914baeb3649a89dc5f3a555c88737e5e98fc"},
-    {file = "black-24.4.2-cp312-cp312-win_amd64.whl", hash = "sha256:415e686e87dbbe6f4cd5ef0fbf764af7b89f9057b97c908742b6008cc554b9c0"},
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-    {file = "black-24.4.2-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:98e123f1d5cfd42f886624d84464f7756f60ff6eab89ae845210631714f6db94"},
-    {file = "black-24.4.2-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:48a85f2cb5e6799a9ef05347b476cce6c182d6c71ee36925a6c194d074336ef8"},
-    {file = "black-24.4.2-cp38-cp38-win_amd64.whl", hash = "sha256:b1530ae42e9d6d5b670a34db49a94115a64596bc77710b1d05e9801e62ca0a7c"},
-    {file = "black-24.4.2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:37aae07b029fa0174d39daf02748b379399b909652a806e5708199bd93899da1"},
-    {file = "black-24.4.2-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:da33a1a5e49c4122ccdfd56cd021ff1ebc4a1ec4e2d01594fef9b6f267a9e741"},
-    {file = "black-24.4.2-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ef703f83fc32e131e9bcc0a5094cfe85599e7109f896fe8bc96cc402f3eb4b6e"},
-    {file = "black-24.4.2-cp39-cp39-win_amd64.whl", hash = "sha256:b9176b9832e84308818a99a561e90aa479e73c523b3f77afd07913380ae2eab7"},
-    {file = "black-24.4.2-py3-none-any.whl", hash = "sha256:d36ed1124bb81b32f8614555b34cc4259c3fbc7eec17870e8ff8ded335b58d8c"},
-    {file = "black-24.4.2.tar.gz", hash = "sha256:c872b53057f000085da66a19c55d68f6f8ddcac2642392ad3a355878406fbd4d"},
-]
-
-[package.dependencies]
-click = ">=8.0.0"
-mypy-extensions = ">=0.4.3"
-packaging = ">=22.0"
-pathspec = ">=0.9.0"
-platformdirs = ">=2"
-tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
-typing-extensions = {version = ">=4.0.1", markers = "python_version < \"3.11\""}
-
-[package.extras]
-colorama = ["colorama (>=0.4.3)"]
-d = ["aiohttp (>=3.7.4)", "aiohttp (>=3.7.4,!=3.9.0)"]
-jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
-uvloop = ["uvloop (>=0.15.2)"]
-
-[[package]]
-name = "click"
-version = "8.1.7"
-description = "Composable command line interface toolkit"
-optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "click-8.1.7-py3-none-any.whl", hash = "sha256:ae74fb96c20a0277a1d615f1e4d73c8414f5a98db8b799a7931d1582f3390c28"},
-    {file = "click-8.1.7.tar.gz", hash = "sha256:ca9853ad459e787e2192211578cc907e7594e294c7ccc834310722b41b9ca6de"},
-]
-
-[package.dependencies]
-colorama = {version = "*", markers = "platform_system == \"Windows\""}
+# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
 
 [[package]]
 name = "colorama"
@@ -73,63 +13,63 @@ files = [
 
 [[package]]
 name = "coverage"
-version = "7.4.4"
+version = "7.6.0"
 description = "Code coverage measurement for Python"
 optional = false
 python-versions = ">=3.8"
 files = [
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 test = ["pytest (>=6)"]
 
-[[package]]
-name = "flake8"
-version = "7.1.0"
-description = "the modular source code checker: pep8 pyflakes and co"
-optional = false
-python-versions = ">=3.8.1"
-files = [
-    {file = "flake8-7.1.0-py2.py3-none-any.whl", hash = "sha256:2e416edcc62471a64cea09353f4e7bdba32aeb079b6e360554c659a122b1bc6a"},
-    {file = "flake8-7.1.0.tar.gz", hash = "sha256:48a07b626b55236e0fb4784ee69a465fbf59d79eec1f5b4785c3d3bc57d17aa5"},
-]
-
-[package.dependencies]
-mccabe = ">=0.7.0,<0.8.0"
-pycodestyle = ">=2.12.0,<2.13.0"
-pyflakes = ">=3.2.0,<3.3.0"
-
 [[package]]
 name = "fugashi"
 version = "1.3.2"
@@ -249,20 +173,6 @@ files = [
     {file = "iniconfig-2.0.0.tar.gz", hash = "sha256:2d91e135bf72d31a410b17c16da610a82cb55f6b0477d1a902134b24a455b8b3"},
 ]
 
-[[package]]
-name = "isort"
-version = "5.13.2"
-description = "A Python utility / library to sort Python imports."
-optional = false
-python-versions = ">=3.8.0"
-files = [
-    {file = "isort-5.13.2-py3-none-any.whl", hash = "sha256:8ca5e72a8d85860d5a3fa69b8745237f2939afe12dbf656afbcb47fe72d947a6"},
-    {file = "isort-5.13.2.tar.gz", hash = "sha256:48fdfcb9face5d58a4f6dde2e72a1fb8dcaf8ab26f95ab49fab84c2ddefb0109"},
-]
-
-[package.extras]
-colors = ["colorama (>=0.4.6)"]
-
 [[package]]
 name = "jaconv"
 version = "0.3.4"
@@ -273,17 +183,6 @@ files = [
     {file = "jaconv-0.3.4.tar.gz", hash = "sha256:9e7c55f3f0b0e2dbad62f6c9fa0c30fc6fffdbb78297955509d90856b3a31d6d"},
 ]
 
-[[package]]
-name = "mccabe"
-version = "0.7.0"
-description = "McCabe checker, plugin for flake8"
-optional = false
-python-versions = ">=3.6"
-files = [
-    {file = "mccabe-0.7.0-py2.py3-none-any.whl", hash = "sha256:6c2d30ab6be0e4a46919781807b4f0d834ebdd6c6e3dca0bda5a15f863427b6e"},
-    {file = "mccabe-0.7.0.tar.gz", hash = "sha256:348e0240c33b60bbdf4e523192ef919f28cb2c3d7d5c7794f74009290f236325"},
-]
-
 [[package]]
 name = "mojimoji"
 version = "0.0.13"
@@ -329,54 +228,17 @@ files = [
     {file = "mojimoji-0.0.13.tar.gz", hash = "sha256:0e6d2fba22cc8bf132a5bdf3a964296d9287a618d09681a12868f0fd518e4230"},
 ]
 
-[[package]]
-name = "mypy-extensions"
-version = "1.0.0"
-description = "Type system extensions for programs checked with the mypy type checker."
-optional = false
-python-versions = ">=3.5"
-files = [
-    {file = "mypy_extensions-1.0.0-py3-none-any.whl", hash = "sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d"},
-    {file = "mypy_extensions-1.0.0.tar.gz", hash = "sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782"},
-]
-
 [[package]]
 name = "packaging"
-version = "24.0"
+version = "24.1"
 description = "Core utilities for Python packages"
 optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "packaging-24.0-py3-none-any.whl", hash = "sha256:2ddfb553fdf02fb784c234c7ba6ccc288296ceabec964ad2eae3777778130bc5"},
-    {file = "packaging-24.0.tar.gz", hash = "sha256:eb82c5e3e56209074766e6885bb04b8c38a0c015d0a30036ebe7ece34c9989e9"},
-]
-
-[[package]]
-name = "pathspec"
-version = "0.12.1"
-description = "Utility library for gitignore style pattern matching of file paths."
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "pathspec-0.12.1-py3-none-any.whl", hash = "sha256:a0d503e138a4c123b27490a4f7beda6a01c6f288df0e4a8b79c7eb0dc7b4cc08"},
-    {file = "pathspec-0.12.1.tar.gz", hash = "sha256:a482d51503a1ab33b1c67a6c3813a26953dbdc71c31dacaef9a838c4e29f5712"},
-]
-
-[[package]]
-name = "platformdirs"
-version = "4.2.0"
-description = "A small Python package for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "platformdirs-4.2.0-py3-none-any.whl", hash = "sha256:0614df2a2f37e1a662acbd8e2b25b92ccf8632929bc6d43467e17fe89c75e068"},
-    {file = "platformdirs-4.2.0.tar.gz", hash = "sha256:ef0cc731df711022c174543cb70a9b5bd22e5a9337c8624ef2c2ceb8ddad8768"},
+    {file = "packaging-24.1-py3-none-any.whl", hash = "sha256:5b8f2217dbdbd2f7f384c41c628544e6d52f2d0f53c6d0c3ea61aa5d1d7ff124"},
+    {file = "packaging-24.1.tar.gz", hash = "sha256:026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002"},
 ]
 
-[package.extras]
-docs = ["furo (>=2023.9.10)", "proselint (>=0.13)", "sphinx (>=7.2.6)", "sphinx-autodoc-typehints (>=1.25.2)"]
-test = ["appdirs (==1.4.4)", "covdefaults (>=2.3)", "pytest (>=7.4.3)", "pytest-cov (>=4.1)", "pytest-mock (>=3.12)"]
-
 [[package]]
 name = "pluggy"
 version = "1.5.0"
@@ -392,28 +254,6 @@ files = [
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
 
-[[package]]
-name = "pycodestyle"
-version = "2.12.0"
-description = "Python style guide checker"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "pycodestyle-2.12.0-py2.py3-none-any.whl", hash = "sha256:949a39f6b86c3e1515ba1787c2022131d165a8ad271b11370a8819aa070269e4"},
-    {file = "pycodestyle-2.12.0.tar.gz", hash = "sha256:442f950141b4f43df752dd303511ffded3a04c2b6fb7f65980574f0c31e6e79c"},
-]
-
-[[package]]
-name = "pyflakes"
-version = "3.2.0"
-description = "passive checker of Python programs"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "pyflakes-3.2.0-py2.py3-none-any.whl", hash = "sha256:84b5be138a2dfbb40689ca07e2152deb896a65c3a3e24c251c5c62489568074a"},
-    {file = "pyflakes-3.2.0.tar.gz", hash = "sha256:1c61603ff154621fb2a9172037d84dca3500def8c8b630657d1701f026f8af3f"},
-]
-
 [[package]]
 name = "pytest"
 version = "8.2.2"
@@ -455,25 +295,41 @@ pytest = ">=4.6"
 testing = ["fields", "hunter", "process-tests", "pytest-xdist", "virtualenv"]
 
 [[package]]
-name = "tomli"
-version = "2.0.1"
-description = "A lil' TOML parser"
+name = "ruff"
+version = "0.5.1"
+description = "An extremely fast Python linter and code formatter, written in Rust."
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
-    {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
+    {file = "ruff-0.5.1-py3-none-linux_armv6l.whl", hash = "sha256:6ecf968fcf94d942d42b700af18ede94b07521bd188aaf2cd7bc898dd8cb63b6"},
+    {file = "ruff-0.5.1-py3-none-macosx_10_12_x86_64.whl", hash = "sha256:204fb0a472f00f2e6280a7c8c7c066e11e20e23a37557d63045bf27a616ba61c"},
+    {file = "ruff-0.5.1-py3-none-macosx_11_0_arm64.whl", hash = "sha256:d235968460e8758d1e1297e1de59a38d94102f60cafb4d5382033c324404ee9d"},
+    {file = "ruff-0.5.1-py3-none-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:38beace10b8d5f9b6bdc91619310af6d63dd2019f3fb2d17a2da26360d7962fa"},
+    {file = "ruff-0.5.1-py3-none-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:5e478d2f09cf06add143cf8c4540ef77b6599191e0c50ed976582f06e588c994"},
+    {file = "ruff-0.5.1-py3-none-manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:f0368d765eec8247b8550251c49ebb20554cc4e812f383ff9f5bf0d5d94190b0"},
+    {file = "ruff-0.5.1-py3-none-manylinux_2_17_ppc64.manylinux2014_ppc64.whl", hash = "sha256:3a9a9a1b582e37669b0138b7c1d9d60b9edac880b80eb2baba6d0e566bdeca4d"},
+    {file = "ruff-0.5.1-py3-none-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:bdd9f723e16003623423affabcc0a807a66552ee6a29f90eddad87a40c750b78"},
+    {file = "ruff-0.5.1-py3-none-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:be9fd62c1e99539da05fcdc1e90d20f74aec1b7a1613463ed77870057cd6bd96"},
+    {file = "ruff-0.5.1-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:e216fc75a80ea1fbd96af94a6233d90190d5b65cc3d5dfacf2bd48c3e067d3e1"},
+    {file = "ruff-0.5.1-py3-none-musllinux_1_2_aarch64.whl", hash = "sha256:c4c2112e9883a40967827d5c24803525145e7dab315497fae149764979ac7929"},
+    {file = "ruff-0.5.1-py3-none-musllinux_1_2_armv7l.whl", hash = "sha256:dfaf11c8a116394da3b65cd4b36de30d8552fa45b8119b9ef5ca6638ab964fa3"},
+    {file = "ruff-0.5.1-py3-none-musllinux_1_2_i686.whl", hash = "sha256:d7ceb9b2fe700ee09a0c6b192c5ef03c56eb82a0514218d8ff700f6ade004108"},
+    {file = "ruff-0.5.1-py3-none-musllinux_1_2_x86_64.whl", hash = "sha256:bac6288e82f6296f82ed5285f597713acb2a6ae26618ffc6b429c597b392535c"},
+    {file = "ruff-0.5.1-py3-none-win32.whl", hash = "sha256:5c441d9c24ec09e1cb190a04535c5379b36b73c4bc20aa180c54812c27d1cca4"},
+    {file = "ruff-0.5.1-py3-none-win_amd64.whl", hash = "sha256:b1789bf2cd3d1b5a7d38397cac1398ddf3ad7f73f4de01b1e913e2abc7dfc51d"},
+    {file = "ruff-0.5.1-py3-none-win_arm64.whl", hash = "sha256:2875b7596a740cbbd492f32d24be73e545a4ce0a3daf51e4f4e609962bfd3cd2"},
+    {file = "ruff-0.5.1.tar.gz", hash = "sha256:3164488aebd89b1745b47fd00604fb4358d774465f20d1fcd907f9c0fc1b0655"},
 ]
 
 [[package]]
-name = "typing-extensions"
-version = "4.10.0"
-description = "Backported and Experimental Type Hints for Python 3.8+"
+name = "tomli"
+version = "2.0.1"
+description = "A lil' TOML parser"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.7"
 files = [
-    {file = "typing_extensions-4.10.0-py3-none-any.whl", hash = "sha256:69b1a937c3a517342112fb4c6df7e72fc39a38e7891a5730ed4985b5214b5475"},
-    {file = "typing_extensions-4.10.0.tar.gz", hash = "sha256:b0abd7c89e8fb96f98db18d86106ff1d90ab692004eb746cf6eda2682f91b3cb"},
+    {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
+    {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
 ]
 
 [[package]]
@@ -488,5 +344,5 @@ files = [
 
 [metadata]
 lock-version = "2.0"
-python-versions = "^3.8"
-content-hash = "dd5a72f8a81f310ab3342e6b17a58d06350138fe0dc4622be30fea8b990fbdfb"
+python-versions = "^3.10"
+content-hash = "08270944f3d38a4234a630e0a278d2a339f3ab158661afa998b147a8bd8221ad"
diff --git a/pyproject.toml b/pyproject.toml
index 58061f2..1a7143f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,24 +7,30 @@ license = "MIT"
 readme = "README.md"
 
 [tool.poetry.dependencies]
-python = "^3.8"
+python = "^3.10"
 cutlet = "^0.4.0"
 fugashi = {extras = ["unidic-lite"], version = "^1.3.2"}
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.2.2"
 pytest-cov = "^5.0.0"
-flake8 = {version = "^7.1.0", python = "^3.8.1"}
-black = "^24.4.2"
-isort = "^5.13.2"
+ruff = "^0.5.1"
 
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
 
-[tool.black]
+[tool.ruff]
+target-version = "py310"
 line-length = 120
 
-[tool.isort]
-profile = "black"
-line_length = 120
+[tool.ruff.lint]
+select = ["ALL"]
+ignore = ["D"]  # Ignore all documentation warnings. Probably not the best option in real projects.
+fixable = ["ALL"]
+
+[tool.ruff.lint.per-file-ignores]
+"tests/*" = [
+    "S101",  # Don't warn about using of asserts in tests
+    "ANN201",  # Don't warn on missing return type annotation in tests
+]
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_cp859.py b/tests/test_cp859.py
index 48af44a..e4a1dc8 100644
--- a/tests/test_cp859.py
+++ b/tests/test_cp859.py
@@ -1,13 +1,15 @@
 import codecs
+from collections.abc import Generator
 
 import pytest
-from utils import register_codec
 
 from alternative_encodings import cp859
 
+from .utils import register_codec
+
 
 @pytest.fixture(scope="module", autouse=True)
-def register_codec_fixture():
+def _register_codec_fixture() -> Generator[None, None, None]:
     with register_codec(cp859):
         yield
 
@@ -24,12 +26,12 @@ def register_codec_fixture():
 )
 
 
-@pytest.mark.parametrize("source_data, encoded",
+@pytest.mark.parametrize(("source_data", "encoded"),
     [
         (source_data, encoded),
-        ('\r\n', b'\r\n'),
-    ]
+        ("\r\n", b"\r\n"),
+    ],
 )
-def test_encode(source_data, encoded):
+def test_encode(source_data: str, encoded: bytes):
     assert codecs.encode(source_data, "cp859") == encoded
     assert codecs.decode(encoded, "cp859") == source_data
diff --git a/tests/test_cp866i.py b/tests/test_cp866i.py
index 4f4e83b..5aa7f3e 100644
--- a/tests/test_cp866i.py
+++ b/tests/test_cp866i.py
@@ -1,22 +1,24 @@
 import codecs
+from collections.abc import Generator
 
 import pytest
-from utils import register_codec
 
 from alternative_encodings import cp866i
 
+from .utils import register_codec
+
 
 @pytest.fixture(scope="module", autouse=True)
-def register_codec_fixture():
+def _register_codec_fixture() -> Generator[None, None, None]:
     with register_codec(cp866i):
         yield
 
 
-source_data = "У Іўі худы жвавы чорт у зялёнай камізэльцы пабег пад'есці фаршу з юшкай"
+source_data = "У Іўі худы жвавы чорт у зялёнай камізэльцы пабег пад'есці фаршу з юшкай"  # noqa: RUF001
 encoded = (
     b"\x93 I\xf7i \xe5\xe3\xa4\xeb \xa6\xa2\xa0\xa2\xeb \xe7\xae\xe0\xe2 \xe3 \xa7\xef\xab\xf1\xad\xa0\xa9 "
-    + b"\xaa\xa0\xaci\xa7\xed\xab\xec\xe6\xeb \xaf\xa0\xa1\xa5\xa3 \xaf\xa0\xa4'\xa5\xe1\xe6i \xe4\xa0\xe0\xe8\xe3 "
-    + b"\xa7 \xee\xe8\xaa\xa0\xa9"
+    b"\xaa\xa0\xaci\xa7\xed\xab\xec\xe6\xeb \xaf\xa0\xa1\xa5\xa3 \xaf\xa0\xa4'\xa5\xe1\xe6i \xe4\xa0\xe0\xe8\xe3 "
+    b"\xa7 \xee\xe8\xaa\xa0\xa9"
 )
 
 
@@ -29,5 +31,5 @@ def test_encode():
 
 def test_decode():
     result = codecs.decode(encoded, "cp866i")
-    result = result.replace("i", "і").replace("I", "І")
+    result = result.replace("i", "і").replace("I", "І")  # noqa: RUF001
     assert result == source_data
diff --git a/tests/test_general.py b/tests/test_general.py
index d5cde09..1053ba2 100644
--- a/tests/test_general.py
+++ b/tests/test_general.py
@@ -1,10 +1,11 @@
 import codecs
 
 import pytest
-from utils import register_codec
 
 from alternative_encodings import cp859, cp866i, viscii
 
+from .utils import register_codec
+
 codecs_pairs = [
     ("cp859", cp859),
     ("cp866i", cp866i),
@@ -15,9 +16,9 @@
 @pytest.mark.parametrize("string",
     [
         "\r\n",
-    ]
+    ],
 )
-def test_general(string):
+def test_general(string: str):
     for codec_name, codec in codecs_pairs:
         with register_codec(codec):
             encoded = codecs.encode(string, encoding=codec_name)
diff --git a/tests/test_romaji.py b/tests/test_romaji.py
index aac4aa2..1a1a938 100644
--- a/tests/test_romaji.py
+++ b/tests/test_romaji.py
@@ -1,13 +1,15 @@
 import codecs
+from collections.abc import Generator
 
 import pytest
-from utils import register_codec
 
 from alternative_encodings import romaji
 
+from .utils import register_codec
+
 
 @pytest.fixture(scope="module", autouse=True)
-def register_codec_fixture():
+def _register_codec_fixture() -> Generator[None, None, None]:
     with register_codec(romaji):
         yield
 
@@ -23,12 +25,12 @@ def register_codec_fixture():
 """
 
 
-@pytest.mark.parametrize("source_data, encoded",
+@pytest.mark.parametrize(("source_data", "encoded"),
     [
         (source_data, encoded),
-        ('\r\n', b'\r\n'),
-        ('吾輩は猫である。 名前はまだ無い。', b'Wagahai wa neko de aru. Namae wa mada nai.')
-    ]
+        ("\r\n", b"\r\n"),
+        ("吾輩は猫である。 名前はまだ無い。", b"Wagahai wa neko de aru. Namae wa mada nai."),
+    ],
 )
-def test_encode(source_data, encoded):
+def test_encode(source_data: str, encoded: bytes):
     assert codecs.encode(source_data, "romaji") == encoded
diff --git a/tests/test_viscii.py b/tests/test_viscii.py
index 10e87cf..32cc7dc 100644
--- a/tests/test_viscii.py
+++ b/tests/test_viscii.py
@@ -1,13 +1,15 @@
 import codecs
+from collections.abc import Generator
 
 import pytest
-from utils import register_codec
 
 from alternative_encodings import viscii
 
+from .utils import register_codec
+
 
 @pytest.fixture(scope="module", autouse=True)
-def register_codec_fixture():
+def _register_codec_fixture() -> Generator[None, None, None]:
     with register_codec(viscii):
         yield
 
diff --git a/tests/utils.py b/tests/utils.py
index 9cbabbe..6663b6d 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -3,9 +3,9 @@
 
 
 class CodecModule(Protocol):
-    def register(): ...
+    def register(self): ...
 
-    def unregister(): ...
+    def unregister(self): ...
 
 
 @contextlib.contextmanager