diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..0530417
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,37 @@
+name: ci
+on: [push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.6, 3.7, 3.8, 3.9, "3.10"]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install poetry==1.1.11
+          python -m poetry install
+
+      - name: run backend linter
+        run: |
+          python -m poetry run pflake8 chapter_marker
+
+      - name: build and install
+        run: |
+          python -m poetry build
+          python -m poetry install
+
+      - name: run chapter-marker
+        uses: GabrielBB/xvfb-action@v1
+        with:
+          run: python -m poetry run chapter-marker --help
diff --git a/.gitignore b/.gitignore
index e8ba6a0..f8458b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 __pycache__
 *.lst
 dist
+doit.sh
+result
+UNKNOWN.egg-info
diff --git a/Makefile b/Makefile
index 932846a..e284555 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
 lint:
-	poetry run flake8 --max-line-length 100 chapter_marker
+	poetry run pflake8 chapter_marker
 format:
+	poetry run isort --apply
 	poetry run black chapter_marker
diff --git a/chapter_marker/bgt_get_titles.py b/chapter_marker/bgt_get_titles.py
index 733d905..d779849 100644
--- a/chapter_marker/bgt_get_titles.py
+++ b/chapter_marker/bgt_get_titles.py
@@ -10,9 +10,10 @@
 returns the id of the next bgt show
 """
 
-import requests
-import urllib.request
 import os
+import urllib.request
+
+import requests
 from docopt import docopt
 
 url = "https://etherpad.euer.krebsco.de/api/1.2.15/getText?apikey={}&padID={}"
@@ -38,7 +39,9 @@ def main():
         show = current_show()
     try:
         ret = requests.get(url.format(apikey, show)).json()["data"]["text"]
-    except:
+    except:  # noqa E722
+        # way to complicated to do right:
+        # https://stackoverflow.com/questions/16511337
         print("for url:" + url.format(apikey, show))
         print(f"response: {requests.get(url.format(apikey,show))}")
     header = True
diff --git a/chapter_marker/bgt_replace_text.py b/chapter_marker/bgt_replace_text.py
index 9987457..cd7f9cd 100644
--- a/chapter_marker/bgt_replace_text.py
+++ b/chapter_marker/bgt_replace_text.py
@@ -9,9 +9,10 @@
 returns the id of the next bgt show
 """
 
-import requests
-import urllib.request
 import os
+import urllib.request
+
+import requests
 from docopt import docopt
 
 baseurl = "https://etherpad.euer.krebsco.de/api/1.2.15/{}?apikey={}&padID={}"
@@ -44,11 +45,10 @@ def main():
         print(f"replacing <SENDUNGSNUMMER> with {show.upper()}")
         text = text.replace("<SENDUNGSNUMMER>", show.upper())
         print("updating shownotes")
-        ret = requests.post(baseurl.format("setText", apikey, show), data={"text": text})
-    except:
-        print("for url:" + url.format(apikey, show))
-        print(f"response: {requests.get(url.format(apikey,show))}")
-    header = True
+        requests.post(baseurl.format("setText", apikey, show), data={"text": text})
+    except:  # noqa E722
+        print(f"for url: {baseurl.format(apikey, show)}")
+        print(f"response: {requests.get(baseurl.format(apikey,show))}")
 
 
 if __name__ == "__main__":
diff --git a/chapter_marker/resources.py b/chapter_marker/resources.py
index 787bd7a..6552032 100644
--- a/chapter_marker/resources.py
+++ b/chapter_marker/resources.py
@@ -1802,15 +1802,11 @@
 
 
 def qInitResources():
-    QtCore.qRegisterResourceData(
-        rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data
-    )
+    QtCore.qRegisterResourceData(rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data)
 
 
 def qCleanupResources():
-    QtCore.qUnregisterResourceData(
-        rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data
-    )
+    QtCore.qUnregisterResourceData(rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data)
 
 
 qInitResources()
diff --git a/chapter_marker/tray.py b/chapter_marker/tray.py
index 04254f9..b400567 100755
--- a/chapter_marker/tray.py
+++ b/chapter_marker/tray.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -p python3Packages.docopt python3Packages.pyqt5 python3Packages.notify2 python3Packages.requests qt5.qtbase -i python3
+#!nix-shell -p python3Packages.docopt python3Packages.pyqt5 python3Packages.notify2 python3Packages.requests qt5.qtbase -i python3 # noqa
 """ usage: chapter-marker [options] TITLEFILE [SHOW]
 
 options:
@@ -9,41 +9,30 @@
 starts chapter-marker with the given TITLE and starts with the top entry of TITLEFILE
 if the chapter marker file for this SHOW already exists it will be backed up.
 """
-import sys, re
-from docopt import docopt
-from datetime import datetime, timedelta
-import requests
-from os.path import exists, join, expanduser
+import logging
 import pickle
-from PyQt5.Qt import QApplication, QClipboard
-from PyQt5.QtGui import QIcon, QKeySequence
-from PyQt5 import QtCore, QtWidgets, QtGui
-from PyQt5.QtWidgets import (
-    QMainWindow,
-    QWidget,
-    QPlainTextEdit,
-    QPushButton,
-    QSystemTrayIcon,
-    QMenu,
-    QDialog,
-    QShortcut,
-)
-from PyQt5.QtCore import QSize, pyqtSlot, Qt, QObject, pyqtSignal
+import sys
+from datetime import datetime, timedelta
+from os.path import expanduser, join
 
+from docopt import docopt
 from pynput import keyboard
+from PyQt5 import QtGui, QtWidgets
+from PyQt5.QtCore import QObject, pyqtSignal
+from PyQt5.QtGui import QIcon
+from PyQt5.QtWidgets import QMenu, QSystemTrayIcon
+
+from . import resources  # noqa F401
 
 try:
     import notify2
 except ImportError:
     import fakenotify2 as notify2
 
-now = datetime.now
 
-import logging
-from . import resources
+now = datetime.now
 
 log = logging.getLogger("chapter-tray")
-
 logging.basicConfig(level=logging.INFO)
 
 
@@ -56,13 +45,11 @@ def current_show():
 
 
 class KeyBoardManager(QObject):
-    jSignal = pyqtSignal()
-    uSignal = pyqtSignal()
+    j_signal = pyqtSignal()
+    u_signal = pyqtSignal()
 
     def start(self):
-        self.hotkeys = keyboard.GlobalHotKeys(
-            {"<ctrl>+j": self.jSignal.emit, "<ctrl>+u": self.uSignal.emit}
-        )
+        self.hotkeys = keyboard.GlobalHotKeys({"<ctrl>+j": self.j_signal.emit, "<ctrl>+u": self.u_signal.emit})
         self.hotkeys.start()
 
 
@@ -72,13 +59,9 @@ def __init__(self, parent=None):
 
         self.dateAction = QtWidgets.QAction(QIcon(":/icons/start-date.png"), "Start Date", self)
         self.addAction(self.dateAction)
-        self.currentChapterAction = QtWidgets.QAction(
-            QIcon(":/icons/current-chapter.png"), "Current Chapter", self
-        )
+        self.currentChapterAction = QtWidgets.QAction(QIcon(":/icons/current-chapter.png"), "Current Chapter", self)
         self.addAction(self.currentChapterAction)
-        self.nextChapterAction = QtWidgets.QAction(
-            QIcon(":/icons/next-chapter.png"), "Next Chapter", self
-        )
+        self.nextChapterAction = QtWidgets.QAction(QIcon(":/icons/next-chapter.png"), "Next Chapter", self)
         self.addAction(self.nextChapterAction)
 
 
@@ -100,8 +83,8 @@ def __str__(self):
             millis = round(self.delta.microseconds / 1000)
             return f"{h:02}:{m:02}:{s:02}.{millis:03} {self.title}"
 
-    def toSimpleElement(self):
-        raise NotImplemented("sorry")
+    def to_simple_element(self):
+        raise NotImplementedError("sorry")
 
 
 states = ["preshow", "show", "postshow"]
@@ -153,9 +136,7 @@ def begin(self):
         duration = self.timers["show"] - self.timers["preshow"]
         m, s = divmod(duration.seconds, 60)
         h, m = divmod(m, 60)
-        self.add_comment(
-            f"Preshow ende um {self.start_date.replace(microsecond=0) } ({h:02}:{m:02}:{s:02} Vorgeplänkel)"
-        )
+        self.add_comment(f"Preshow ende um {self.start_date.replace(microsecond=0) } ({h:02}:{m:02}:{s:02} Vorgeplänkel)")
         self.get_current().delta = timedelta(seconds=0)
 
     def end(self):
@@ -235,40 +216,33 @@ def __init__(self, parent, show, titles, settingsdir):
         menu = QMenu(parent=None)
         self.setContextMenu(menu)
 
-        settingAction = menu.addAction(QIcon(":/icons/save.png"), "save")
-        settingAction.triggered.connect(self.save)
+        setting_action = menu.addAction(QIcon(":/icons/save.png"), "save")
+        setting_action.triggered.connect(self.save)
 
-        settingAction = menu.addAction("---")
+        setting_action = menu.addAction("---")
 
-        settingAction = menu.addAction(QIcon(":/icons/main.png"), "Reset and Restart")
-        settingAction.triggered.connect(self.reset)
+        setting_action = menu.addAction(QIcon(":/icons/main.png"), "Reset and Restart")
+        setting_action.triggered.connect(self.reset)
 
-        settingAction = menu.addAction(QIcon(":/icons/exit.png"), "exit")
-        settingAction.triggered.connect(self.exit)
+        setting_action = menu.addAction(QIcon(":/icons/exit.png"), "exit")
+        setting_action.triggered.connect(self.exit)
 
         manager = KeyBoardManager(self)
-        manager.jSignal.connect(self.next_chapter)
+        manager.j_signal.connect(self.next_chapter)
         manager.start()
 
-        # clipboard handling
-        # QApplication.clipboard().dataChanged.connect(self.clipboardChanged)
-
-        # shortcuts
-
     def exit(self):
         log.info("Persisting Chaptermarks")
         self.markers.persist()
         sys.exit()
 
     def refresh_menu(self):
-        self.left_menu.dateAction.setText(
-            f"{self.markers.state} since {self.markers.timers[self.markers.state].replace(microsecond=0)}"
-        )
+        self.left_menu.dateAction.setText(f"{self.markers.state} since {self.markers.timers[self.markers.state].replace(microsecond=0)}")
         self.left_menu.currentChapterAction.setText(f"Current: {self.markers.get_current()}")
         try:
             self.left_menu.nextChapterAction.setText(f"Next: {self.markers.get_next().title}")
-        except:
-            self.left_menu.nextChapterAction.setText(f"No next Chapter")
+        except:  # noqa E722
+            self.left_menu.nextChapterAction.setText("No next Chapter")
 
     def next_chapter(self):
         log.info("Markers Status:")
@@ -282,8 +256,8 @@ def next_chapter(self):
             notify2.Notification(f"Next Chapter: {self.markers.get_current().title}").show()
             log.info(f"next chapter {self.markers.get_current().title}")
         else:
-            log.info(f"Cannot move to next chapter")
-            notify2.Notification(f"Cannot move to next Chapter").show()
+            log.info("Cannot move to next chapter")
+            notify2.Notification("Cannot move to next Chapter").show()
 
     def left_click(self, value):
         self.refresh_menu()
@@ -298,13 +272,6 @@ def reset(self):
     def save(self):
         self.markers.persist()
 
-    # Get the system clipboard contents
-    def clipboardChanged(self):
-        text = QApplication.clipboard().text()
-        if type(text) != str:
-            return
-        # print(text)
-
 
 def main():
     args = docopt(__doc__)
@@ -315,7 +282,7 @@ def main():
     else:
 
         class FakeNotify2:
-            def Notification(self, text):
+            def Notification(self, text):  # noqa N802
                 return self
 
             def show(self):
@@ -327,7 +294,7 @@ def show(self):
     if not show:
         show = current_show()
 
-    titles = [l.strip() for l in open(args["TITLEFILE"]).readlines()]
+    titles = [line.strip() for line in open(args["TITLEFILE"]).readlines()]
 
     app = QtWidgets.QApplication([])  # can also take sys.argv
     tray = SystemTrayIcon(app, show, titles, settingsdir)
diff --git a/poetry.lock b/poetry.lock
index 749bb8e..d781bb6 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -31,7 +31,7 @@ d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
 
 [[package]]
 name = "certifi"
-version = "2021.5.30"
+version = "2021.10.8"
 description = "Python package for providing Mozilla's CA Bundle."
 category = "main"
 optional = false
@@ -39,7 +39,7 @@ python-versions = "*"
 
 [[package]]
 name = "charset-normalizer"
-version = "2.0.6"
+version = "2.0.7"
 description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
 category = "main"
 optional = false
@@ -50,7 +50,7 @@ unicode_backport = ["unicodedata2"]
 
 [[package]]
 name = "click"
-version = "8.0.1"
+version = "8.0.3"
 description = "Composable command line interface toolkit"
 category = "dev"
 optional = false
@@ -94,17 +94,46 @@ python-versions = "*"
 
 [[package]]
 name = "flake8"
-version = "3.9.2"
+version = "4.0.1"
 description = "the modular source code checker: pep8 pyflakes and co"
 category = "dev"
 optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+python-versions = ">=3.6"
 
 [package.dependencies]
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+importlib-metadata = {version = "<4.3", markers = "python_version < \"3.8\""}
 mccabe = ">=0.6.0,<0.7.0"
-pycodestyle = ">=2.7.0,<2.8.0"
-pyflakes = ">=2.3.0,<2.4.0"
+pycodestyle = ">=2.8.0,<2.9.0"
+pyflakes = ">=2.4.0,<2.5.0"
+
+[[package]]
+name = "flake8-black"
+version = "0.2.3"
+description = "flake8 plugin to call black as a code style validator"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+black = "*"
+flake8 = ">=3.0.0"
+toml = "*"
+
+[[package]]
+name = "flake8-isort"
+version = "4.1.1"
+description = "flake8 plugin that integrates isort ."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = ">=3.2.1,<5"
+isort = ">=4.3.5,<6"
+testfixtures = ">=6.8.0,<7"
+
+[package.extras]
+test = ["pytest-cov"]
 
 [[package]]
 name = "flake8-polyfill"
@@ -119,7 +148,7 @@ flake8 = "*"
 
 [[package]]
 name = "idna"
-version = "3.2"
+version = "3.3"
 description = "Internationalized Domain Names in Applications (IDNA)"
 category = "main"
 optional = false
@@ -127,7 +156,7 @@ python-versions = ">=3.5"
 
 [[package]]
 name = "importlib-metadata"
-version = "4.8.1"
+version = "4.2.0"
 description = "Read metadata from Python packages"
 category = "dev"
 optional = false
@@ -139,8 +168,21 @@ zipp = ">=0.5"
 
 [package.extras]
 docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-perf = ["ipython"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-perf (>=0.9.2)", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+
+[[package]]
+name = "isort"
+version = "4.3.21"
+description = "A Python utility / library to sort Python imports."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.extras]
+pipfile = ["pipreqs", "requirementslib"]
+pyproject = ["toml"]
+requirements = ["pipreqs", "pip-api"]
+xdg_home = ["appdirs (>=1.4.0)"]
 
 [[package]]
 name = "mccabe"
@@ -188,15 +230,15 @@ flake8-polyfill = ">=1.0.2,<2"
 
 [[package]]
 name = "pycodestyle"
-version = "2.7.0"
+version = "2.8.0"
 description = "Python style guide checker"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "pyflakes"
-version = "2.3.1"
+version = "2.4.0"
 description = "passive checker of Python programs"
 category = "dev"
 optional = false
@@ -204,7 +246,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pynput"
-version = "1.7.3"
+version = "1.7.4"
 description = "Monitor and control user input devices"
 category = "main"
 optional = false
@@ -212,7 +254,8 @@ python-versions = "*"
 
 [package.dependencies]
 evdev = {version = ">=1.3", markers = "sys_platform in \"linux\""}
-pyobjc-framework-Quartz = {version = ">=7.0", markers = "sys_platform == \"darwin\""}
+pyobjc-framework-ApplicationServices = {version = ">=7.3", markers = "sys_platform == \"darwin\""}
+pyobjc-framework-Quartz = {version = ">=7.3", markers = "sys_platform == \"darwin\""}
 python-xlib = {version = ">=0.17", markers = "sys_platform in \"linux\""}
 six = "*"
 
@@ -224,6 +267,19 @@ category = "main"
 optional = false
 python-versions = ">=3.6"
 
+[[package]]
+name = "pyobjc-framework-applicationservices"
+version = "7.3"
+description = "Wrappers for the framework ApplicationServices on macOS"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+pyobjc-core = ">=7.3"
+pyobjc-framework-Cocoa = ">=7.3"
+pyobjc-framework-Quartz = ">=7.3"
+
 [[package]]
 name = "pyobjc-framework-cocoa"
 version = "7.3"
@@ -247,16 +303,28 @@ python-versions = ">=3.6"
 pyobjc-core = ">=7.3"
 pyobjc-framework-Cocoa = ">=7.3"
 
+[[package]]
+name = "pyproject-flake8"
+version = "0.0.1a2"
+description = "pyproject-flake8 (`pflake8`), a monkey patching wrapper to connect flake8 with pyproject.toml configuration"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = "*"
+toml = "*"
+
 [[package]]
 name = "pyqt5"
-version = "5.15.4"
+version = "5.15.5"
 description = "Python bindings for the Qt cross platform application toolkit"
 category = "main"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-PyQt5-Qt5 = ">=5.15"
+PyQt5-Qt5 = ">=5.15.2"
 PyQt5-sip = ">=12.8,<13"
 
 [[package]]
@@ -288,7 +356,7 @@ six = ">=1.10.0"
 
 [[package]]
 name = "regex"
-version = "2021.9.30"
+version = "2021.10.23"
 description = "Alternative regular expression module, to replace re."
 category = "dev"
 optional = false
@@ -320,6 +388,19 @@ category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 
+[[package]]
+name = "testfixtures"
+version = "6.18.3"
+description = "A collection of helpers and mock objects for unit tests and doc tests."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.extras]
+build = ["setuptools-git", "wheel", "twine"]
+docs = ["sphinx", "zope.component", "sybil", "twisted", "mock", "django (<2)", "django"]
+test = ["pytest (>=3.6)", "pytest-cov", "pytest-django", "zope.component", "sybil", "twisted", "mock", "django (<2)", "django"]
+
 [[package]]
 name = "toml"
 version = "0.10.2"
@@ -371,7 +452,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = ">=3.6"
-content-hash = "7c0a8935ce9d9938598f7dfa060648f0cc2666153b60bb6ea1e57f7c97836443"
+content-hash = "f9a20619026650d04ed34125eb052ff4aeb4de514faae37b3710b6b6807904d0"
 
 [metadata.files]
 appdirs = [
@@ -382,16 +463,16 @@ black = [
     {file = "black-20.8b1.tar.gz", hash = "sha256:1c02557aa099101b9d21496f8a914e9ed2222ef70336404eeeac8edba836fbea"},
 ]
 certifi = [
-    {file = "certifi-2021.5.30-py2.py3-none-any.whl", hash = "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"},
-    {file = "certifi-2021.5.30.tar.gz", hash = "sha256:2bbf76fd432960138b3ef6dda3dde0544f27cbf8546c458e60baf371917ba9ee"},
+    {file = "certifi-2021.10.8-py2.py3-none-any.whl", hash = "sha256:d62a0163eb4c2344ac042ab2bdf75399a71a2d8c7d47eac2e2ee91b9d6339569"},
+    {file = "certifi-2021.10.8.tar.gz", hash = "sha256:78884e7c1d4b00ce3cea67b44566851c4343c120abd683433ce934a68ea58872"},
 ]
 charset-normalizer = [
-    {file = "charset-normalizer-2.0.6.tar.gz", hash = "sha256:5ec46d183433dcbd0ab716f2d7f29d8dee50505b3fdb40c6b985c7c4f5a3591f"},
-    {file = "charset_normalizer-2.0.6-py3-none-any.whl", hash = "sha256:5d209c0a931f215cee683b6445e2d77677e7e75e159f78def0db09d68fafcaa6"},
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+    {file = "regex-2021.10.23-cp39-cp39-win_amd64.whl", hash = "sha256:0f7552429dd39f70057ac5d0e897e5bfe211629652399a21671e53f2a9693a4e"},
+    {file = "regex-2021.10.23.tar.gz", hash = "sha256:f3f9a91d3cc5e5b0ddf1043c0ae5fa4852f18a1c0050318baf5fc7930ecc1f9c"},
 ]
 requests = [
     {file = "requests-2.26.0-py2.py3-none-any.whl", hash = "sha256:6c1246513ecd5ecd4528a0906f910e8f0f9c6b8ec72030dc9fd154dc1a6efd24"},
@@ -573,6 +675,10 @@ six = [
     {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
     {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
 ]
+testfixtures = [
+    {file = "testfixtures-6.18.3-py2.py3-none-any.whl", hash = "sha256:6ddb7f56a123e1a9339f130a200359092bd0a6455e31838d6c477e8729bb7763"},
+    {file = "testfixtures-6.18.3.tar.gz", hash = "sha256:2600100ae96ffd082334b378e355550fef8b4a529a6fa4c34f47130905c7426d"},
+]
 toml = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
diff --git a/pyproject.toml b/pyproject.toml
index 7319bf1..32e84ca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,12 +38,25 @@ pynput = "*"
 notify2 = "*"
 
 [tool.poetry.dev-dependencies]
-black = "*"
-flake8 = "*"
+pyproject-flake8 = "*"
+flake8-black = "*"
+flake8-isort = "*"
 pep8-naming = "*"
 
 [tool.black]
-line-length = 100
+line-length = 140
+
+[tool.flake8]
+max-line-length = 140
+exclude = "chapter_marker/resources.py"
+
+[tool.isort]
+multi_line_output = 3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
+ensure_newline_before_comments = true
+line_length = 140
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
diff --git a/setup.py b/setup.py
index 8bf1ba9..6068493 100644
--- a/setup.py
+++ b/setup.py
@@ -1,2 +1,3 @@
 from setuptools import setup
+
 setup()