diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..09834cf
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,55 @@
+[build-system]
+requires = ["setuptools>=61.2"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "flake8-isort"
+version = "6.1.1.dev0"
+authors = [{ name = "Gil Forcada", email = "gil.gnome@gmail.com" }]
+license = { text = "GPL version 2" }
+description = "flake8 plugin that integrates isort ."
+keywords = ["pep8", "flake8", "python", "isort", "imports"]
+readme = "README.rst"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Framework :: Flake8",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: GNU General Public License v2 (GPLv2)",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "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",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+    "Topic :: Software Development",
+    "Topic :: Software Development :: Quality Assurance",
+]
+urls = { Homepage = "https://github.com/gforcada/flake8-isort" }
+requires-python = ">=3.8"
+dependencies = ["flake8", "isort >= 5.0.0, <6"]
+
+[project.entry-points]
+"flake8.extension" = { I00 = "flake8_isort:Flake8Isort" }
+
+[project.optional-dependencies]
+test = ["pytest"]
+
+[tool.setuptools]
+py-modules = ["flake8_isort"]
+zip-safe = false
+include-package-data = true
+
+[tool."zest.releaser"]
+create-wheel = "yes"
+
+[tool.check-manifest]
+ignore = """
+.installed.cfg"""
+
+[tool.isort]
+profile = "black"
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 2caaac2..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,9 +0,0 @@
-[zest.releaser]
-create-wheel = yes
-
-[check-manifest]
-ignore =
-    .installed.cfg
-
-[isort]
-profile = black
diff --git a/setup.py b/setup.py
deleted file mode 100644
index d41e350..0000000
--- a/setup.py
+++ /dev/null
@@ -1,69 +0,0 @@
-from setuptools import setup
-
-short_description = 'flake8 plugin that integrates isort .'
-
-
-def read_file(filename):
-    with open(filename) as file_obj:
-        file_contents = file_obj.read()
-    return file_contents
-
-
-long_description = f"""
-{read_file('README.rst')}
-{read_file('CHANGES.rst')}
-"""
-
-
-setup(
-    name='flake8-isort',
-    version='6.1.1.dev0',
-    description=short_description,
-    long_description=long_description,
-    # Get more from https://pypi.org/classifiers/
-    classifiers=[
-        'Development Status :: 5 - Production/Stable',
-        'Environment :: Console',
-        'Framework :: Flake8',
-        'Intended Audience :: Developers',
-        'License :: OSI Approved :: GNU General Public License v2 (GPLv2)',
-        'Operating System :: OS Independent',
-        'Programming Language :: Python',
-        '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',
-        'Programming Language :: Python :: Implementation :: CPython',
-        'Programming Language :: Python :: Implementation :: PyPy',
-        'Topic :: Software Development',
-        'Topic :: Software Development :: Quality Assurance',
-    ],
-    python_requires='>=3.8',
-    keywords='pep8 flake8 python isort imports',
-    author='Gil Forcada',
-    author_email='gil.gnome@gmail.com',
-    url='https://github.com/gforcada/flake8-isort',
-    license='GPL version 2',
-    py_modules=[
-        'flake8_isort',
-    ],
-    include_package_data=True,
-    test_suite='run_tests',
-    zip_safe=False,
-    install_requires=[
-        'flake8',
-        'isort >= 5.0.0, <6',
-    ],
-    extras_require={
-        'test': [
-            'pytest',
-        ],
-    },
-    entry_points={
-        'flake8.extension': [
-            'I00 = flake8_isort:Flake8Isort',
-        ],
-    },
-)
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..a2df03a
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,13 @@
+[tox]
+env_list =
+    py310
+minversion = 4.11.3
+
+[testenv]
+description = run the tests with pytest
+package = wheel
+wheel_build_env = .pkg
+deps =
+    pytest>=6
+commands =
+    pytest {tty:--color=yes} run_tests.py {posargs}