diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..19dcba1
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,45 @@
+[project]
+name = "pytest.sphinx"
+version = "0.4.0"
+description = "Doctest plugin for pytest with support for Sphinx-specific doctest-directives"
+readme = "README.rst"
+requires-python = ">=3.7"
+license = { file = "LICENSE" }
+keywords = ["sphinx", "pytest", "rst"]
+authors = [
+    { name="Thomas Hisch", email="t.hisch@gmail.com" }
+]
+maintainers = [
+    { name="Thomas Hisch", email="t.hisch@gmail.com" }
+]
+
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Framework :: Pytest",
+    "Intended Audience :: Developers",
+    "Topic :: Software Development :: Testing",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Operating System :: OS Independent",
+    "License :: OSI Approved :: BSD License",
+]
+
+# Requirements
+dependencies = [
+    "pytest >=7.0.0",
+]
+
+[project.urls]
+homepage = "https://github.com/thisch/pytest-sphinx"
+
+[project.entry-points."pytest11"]
+"sphinx" = "pytest_sphinx"
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 29bc99d..0000000
--- a/setup.py
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-import codecs
-import os
-
-from setuptools import setup
-
-
-def read(fname):
-    file_path = os.path.join(os.path.dirname(__file__), fname)
-    return codecs.open(file_path, encoding="utf-8").read()
-
-
-setup(
-    name="pytest-sphinx",
-    version="0.4.0",
-    author="Thomas Hisch",
-    author_email="t.hisch@gmail.com",
-    maintainer="Thomas Hisch",
-    maintainer_email="t.hisch@gmail.com",
-    license="BSD-3",
-    url="https://github.com/thisch/pytest-sphinx",
-    description=(
-        "Doctest plugin for pytest with support for "
-        "Sphinx-specific doctest-directives"
-    ),
-    long_description=read("README.rst"),
-    py_modules=["pytest_sphinx"],
-    install_requires=["pytest>=7.0.0"],
-    classifiers=[
-        "Development Status :: 4 - Beta",
-        "Framework :: Pytest",
-        "Intended Audience :: Developers",
-        "Topic :: Software Development :: Testing",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Operating System :: OS Independent",
-        "License :: OSI Approved :: BSD License",
-    ],
-    entry_points={"pytest11": ["sphinx = pytest_sphinx"]},
-)
diff --git a/tox.ini b/tox.ini
index 7f6b154..5aa2818 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,7 @@
 # For more information about tox, see https://tox.readthedocs.io/en/latest/
 [tox]
 envlist = py37,py38,py39,py310,py311,ci-py
+isolated_build = true
 
 [testenv]
 deps =