diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..c3a9866
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,63 @@
+[build-system]
+requires = ["setuptools>=61.2"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "django_csp"
+version = "3.8rc"
+description = "Django Content Security Policy support."
+readme = "README.rst"
+authors = [{name = "James Socol", email = "me@jamessocol.com"}]
+maintainers = [{name = "Mozilla MEAO team", email = "meao-backend@mozilla.com"}]
+license = {text = "BSD"}
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Web Environment",
+    "Environment :: Web Environment :: Mozilla",
+    "Programming Language :: Python",
+    "License :: OSI Approved :: BSD License",
+    "Operating System :: OS Independent",
+    "Intended Audience :: Developers",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: Implementation :: PyPy",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Framework :: Django :: 3.2",
+    "Framework :: Django :: 4.2",
+    "Framework :: Django :: 5.0",
+]
+dependencies = ["Django>=3.2"]
+
+[project.urls]
+Homepage = "http://github.com/mozilla/django-csp"
+Documentation = "http://django-csp.readthedocs.org/"
+Changelog = "https://github.com/mozilla/django-csp/blob/main/CHANGES"
+"Bug Tracker" = "https://github.com/mozilla/django-csp/issues"
+"Source Code" = "https://github.com/mozilla/django-csp"
+
+[project.optional-dependencies]
+tests = [
+    "pytest",
+    "pytest-cov",
+    "pytest-django",
+    "pytest-ruff",
+    "jinja2>=2.9.6",
+]
+jinja2 = ["jinja2>=2.9.6"]
+
+[tool.setuptools]
+zip-safe = false
+include-package-data = true
+
+[tool.setuptools.packages]
+find = {namespaces = false}
+
+[tool.pytest.ini_options]
+addopts = "-vs --tb=short --ruff --ruff-format"
+DJANGO_SETTINGS_MODULE = "csp.tests.settings"
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 6476415..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,4 +0,0 @@
-[tool:pytest]
-addopts = -vs --tb=short --ruff --ruff-format
-
-DJANGO_SETTINGS_MODULE = csp.tests.settings
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 704a18c..0000000
--- a/setup.py
+++ /dev/null
@@ -1,90 +0,0 @@
-import codecs
-import os
-import sys
-
-from setuptools import find_packages, setup
-
-version = "3.8rc"
-
-
-if sys.argv[-1] == "publish":
-    os.system("python setup.py sdist upload")
-    os.system("python setup.py bdist_wheel upload")
-    print("You probably want to also tag the version now:")
-    print(f'  git tag -a {version} -m "version {version}"')
-    print("  git push --tags")
-    sys.exit()
-
-
-def read(*parts):
-    filename = os.path.join(os.path.dirname(__file__), *parts)
-    with codecs.open(filename, encoding="utf-8") as fp:
-        return fp.read()
-
-
-install_requires = [
-    "Django>=3.2",
-]
-
-jinja2_requires = [
-    "jinja2>=2.9.6",
-]
-
-test_requires = [
-    "pytest",
-    "pytest-cov",
-    "pytest-django",
-    "pytest-ruff",
-]
-
-test_requires += jinja2_requires
-
-
-setup(
-    name="django_csp",
-    version=version,
-    description="Django Content Security Policy support.",
-    long_description=read("README.rst"),
-    author="James Socol",
-    author_email="me@jamessocol.com",
-    maintainer="Mozilla MEAO team",
-    maintainer_email="meao-backend@mozilla.com",
-    url="http://github.com/mozilla/django-csp",
-    license="BSD",
-    packages=find_packages(),
-    project_urls={
-        "Documentation": "http://django-csp.readthedocs.org/",
-        "Changelog": "https://github.com/mozilla/django-csp/blob/main/CHANGES",
-        "Bug Tracker": "https://github.com/mozilla/django-csp/issues",
-        "Source Code": "https://github.com/mozilla/django-csp",
-    },
-    install_requires=install_requires,
-    extras_require={
-        "tests": test_requires,
-        "jinja2": jinja2_requires,
-    },
-    include_package_data=True,
-    zip_safe=False,
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Environment :: Web Environment",
-        "Environment :: Web Environment :: Mozilla",
-        "Programming Language :: Python",
-        "License :: OSI Approved :: BSD License",
-        "Operating System :: OS Independent",
-        "Intended Audience :: Developers",
-        "Topic :: Software Development :: Libraries :: Python Modules",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "Programming Language :: Python :: 3.12",
-        "Programming Language :: Python :: Implementation :: PyPy",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Framework :: Django :: 3.2",
-        "Framework :: Django :: 4.2",
-        "Framework :: Django :: 5.0",
-    ],
-)
diff --git a/tox.ini b/tox.ini
index 4f82062..2390c44 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,4 +1,5 @@
 [tox]
+isolated_build = True
 envlist =
     {3.10,3.11,3.12,pypy310}-main
     {3.10,3.11,3.12,pypy310}-5.0.x