diff --git a/.readthedocs.yml b/.readthedocs.yml
index a2a5e6585..bcb1b78cb 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -11,9 +11,10 @@ build:
 
 python:
   install:
-    - requirements: doc/requirements.txt
-    - method: setuptools
+    - method: pip
       path: .
+      extra_requirements:
+        - docs
 
 # This is the default, you can omit this
 formats: []
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index b58161f5d..e54148826 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -11,6 +11,7 @@ may want to subscribe to `GitHub's tag feed
 ======
 not released yet
 
+* UPDATED REQUIREMENT urwid is now required >= 2.1.0
 * optimization in ikhal when editing events in the far future or past
 * FIX an issue in ikhal with updating the view of the event list after editing
   an event
diff --git a/doc/requirements.txt b/doc/requirements.txt
deleted file mode 100644
index 2b49a6fa4..000000000
--- a/doc/requirements.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-sphinx!=1.6.1
-sphinxcontrib-newsfeed
-sphinx-rtd-theme
diff --git a/khal/utils.py b/khal/utils.py
index d7df22b4c..78f525bbd 100644
--- a/khal/utils.py
+++ b/khal/utils.py
@@ -191,7 +191,7 @@ def get_wrapped_text(widget: urwid.AttrMap) -> str:
 def human_formatter(format_string, width=None, colors=True):
     """Create a formatter that formats events to be human readable."""
     def fmt(rows):
-        single = type(rows) == dict
+        single = isinstance(rows, dict)
         if single:
             rows = [rows]
         results = []
@@ -233,7 +233,7 @@ def json_formatter(fields):
         fields = CONTENT_ATTRIBUTES
 
     def fmt(rows):
-        single = type(rows) == dict
+        single = isinstance(rows, dict)
         if single:
             rows = [rows]
 
diff --git a/pyproject.toml b/pyproject.toml
index 6b38a33d7..d6a215b1c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,74 @@
+[project]
+name = "khal"
+dynamic = ["version"]
+description = "Standards based terminal calendar"
+readme = "README.rst"
+authors = [
+  {name = "khal contributors", email = "khal@lostpackets.de"},
+]
+license = {file = "LICENSE"}
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Environment :: Console :: Curses",
+  "Intended Audience :: End Users/Desktop",
+  "License :: OSI Approved :: MIT License",
+  "Operating System :: POSIX",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3 :: Only",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Topic :: Communications",
+  "Topic :: Utilities",
+]
+dependencies = [
+    "click>=3.2",
+    "click_log>=0.2.0",
+    "icalendar>=4.0.3",
+    "urwid>=2.1.0",
+    "pyxdg",
+    "pytz",
+    "python-dateutil",
+    "configobj",
+    "atomicwrites>=0.1.7",
+    "tzlocal>=1.0",
+]
+[project.optional-dependencies]
+proctitle = [
+  "setproctitle"
+]
+test = [
+  "freezegun",
+  "hypothesis",
+  "packaging",
+  "vdirsyncer",
+]
+docs = [
+  "sphinx!=1.6.1",
+  "sphinxcontrib-newsfeed",
+  "sphinx-rtd-theme",
+]
+
+[project.urls]
+homepage = "http://lostpackets.de/khal/"
+repository = "https://github.com/pimutils/khal"
+
+[project.scripts]
+khal = "khal.cli:main_khal"
+ikhal = "khal.cli:main_ikhal"
+
+[build-system]
+requires = ["setuptools>=64", "setuptools_scm>=8"]
+build-backend = "setuptools.build_meta"
+requires-python = ">=3.8,<3.12"
+
+[tool.setuptools.packages]
+find = {}
+
+[tool.setuptools_scm]
+version_file = "khal/version.py"
+
 [tool.ruff]
 select = ["E", "F", "W", "I", "B0", "UP", "C4"]
 ignore = ["B008"]
diff --git a/setup.py b/setup.py
deleted file mode 100755
index b6be6c93c..000000000
--- a/setup.py
+++ /dev/null
@@ -1,76 +0,0 @@
-#!/usr/bin/env python3
-import sys
-
-from setuptools import setup
-
-if sys.version_info < (3, 8):
-    errstr = "khal only supports python version 3.8+. Please Upgrade.\n"
-    sys.stderr.write("#" * len(errstr) + '\n')
-    sys.stderr.write(errstr)
-    sys.stderr.write("#" * len(errstr) + '\n')
-    sys.exit(1)
-
-requirements = [
-    'click>=3.2',
-    'click_log>=0.2.0',
-    'icalendar>=4.0.3',
-    'urwid>=1.3.0',
-    'pyxdg',
-    'pytz',
-    'python-dateutil',
-    'configobj',
-    # https://github.com/untitaker/python-atomicwrites/commit/4d12f23227b6a944ab1d99c507a69fdbc7c9ed6d  # noqa
-    'atomicwrites>=0.1.7',
-    'tzlocal>=1.0',
-]
-
-test_requirements = [
-    'freezegun',
-    'hypothesis',
-    'packaging',
-    'vdirsyncer',
-]
-
-extra_requirements = {
-    'proctitle': ['setproctitle'],
-}
-
-setup(
-    name='khal',
-    description='A standards based terminal calendar',
-    long_description=open('README.rst').read(),
-    author='khal contributors',
-    author_email='khal@lostpackets.de',
-    url='http://lostpackets.de/khal/',
-    license='Expat/MIT',
-    packages=['khal', 'khal/ui', 'khal/khalendar', 'khal/settings'],
-    package_data={'khal': [
-        'settings/default.khal',
-        'settings/khal.spec',
-    ]},
-    entry_points={
-        'console_scripts': [
-            'khal = khal.cli:main_khal',
-            'ikhal = khal.cli:main_ikhal',
-        ]
-    },
-    install_requires=requirements,
-    extras_require=extra_requirements,
-    tests_require=test_requirements,
-    setup_requires=['setuptools_scm != 1.12.0'],  # not needed when using packages from PyPI
-    use_scm_version={'write_to': 'khal/version.py'},
-    zip_safe=False,  # because of configobj loading the .spec file
-    classifiers=[
-        "Development Status :: 4 - Beta",
-        "License :: OSI Approved :: MIT License",
-        "Environment :: Console :: Curses",
-        "Intended Audience :: End Users/Desktop",
-        "Operating System :: POSIX",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3 :: Only",
-        "Topic :: Utilities",
-        "Topic :: Communications",
-    ],
-)