diff --git a/MANIFEST.in b/MANIFEST.in
index d3f372ba..11526d29 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,4 @@
-recursive-include tests *.py
+recursive-include tests *.py test-data/*
 recursive-include immutables *.py *.c *.h *.pyi
 include LICENSE* NOTICE README.rst bench.png
 include immutables/py.typed
diff --git a/pyproject.toml b/pyproject.toml
index 8b15a13e..a2f803b9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,65 @@
+[project]
+name = "immutables"
+description = "Immutable Collections"
+authors = [{name = "MagicStack Inc", email = "hello@magic.io"}]
+readme = "README.rst"
+license = {text = "Apache License, Version 2.0"}
+dynamic = ["version"]
+keywords = [
+    "collections",
+    "immutable",
+    "hamt",
+]
+classifiers=[
+    "License :: OSI Approved :: Apache Software License",
+    "Intended Audience :: Developers",
+    "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 :: 3.12",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Operating System :: POSIX",
+    "Operating System :: MacOS :: MacOS X",
+    "Operating System :: Microsoft :: Windows",
+    "Topic :: Software Development :: Libraries",
+]
+dependencies = [
+    'typing-extensions>=3.7.4.3;python_version<"3.8"',
+]
+
+[project.urls]
+github = "https://github.com/MagicStack/immutables"
+
+[project.optional-dependencies]
+# Minimal dependencies required to test immutables.
+# pycodestyle is a dependency of flake8, but it must be frozen because
+# their combination breaks too often
+# (example breakage: https://gitlab.com/pycqa/flake8/issues/427)
+test = [
+    'flake8~=5.0',
+    'pycodestyle~=2.9',
+    'mypy~=1.4',
+    'pytest~=7.4',
+]
+
 [build-system]
 requires = ["setuptools>=42", "wheel"]
 build-backend = "setuptools.build_meta"
 
+[tool.setuptools]
+zip-safe = false
+
+[tool.setuptools.packages.find]
+include = ["immutables", "immutables.*"]
+
+[tool.setuptools.package-data]
+immutables = ["py.typed", "*.pyi"]
+
+[tool.setuptools.exclude-package-data]
+"*" = ["*.c", "*.h"]
+
 [tool.pytest.ini_options]
 minversion = "6.0"
 addopts = "--capture=no --assert=plain --strict-markers --tb=native --import-mode=importlib"
diff --git a/setup.py b/setup.py
index 3a13d5d5..8cfc9c97 100644
--- a/setup.py
+++ b/setup.py
@@ -3,21 +3,6 @@
 import setuptools
 
 
-# Minimal dependencies required to test immutables.
-TEST_DEPENDENCIES = [
-    # pycodestyle is a dependency of flake8, but it must be frozen because
-    # their combination breaks too often
-    # (example breakage: https://gitlab.com/pycqa/flake8/issues/427)
-    'flake8~=5.0',
-    'pycodestyle~=2.9',
-    'mypy~=1.4',
-    'pytest~=7.4',
-]
-
-EXTRA_DEPENDENCIES = {
-    'test': TEST_DEPENDENCIES,
-}
-
 system = platform.uname().system
 CFLAGS = ['-O2']
 
@@ -62,38 +47,7 @@
     ext_modules = []
 
 
-with open(os.path.join(os.path.dirname(__file__), 'README.rst')) as f:
-    readme = f.read()
-
-
 setuptools.setup(
-    name='immutables',
     version=VERSION,
-    description='Immutable Collections',
-    long_description=readme,
-    python_requires='>=3.7',
-    classifiers=[
-        'License :: OSI Approved :: Apache Software License',
-        'Intended Audience :: Developers',
-        '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 :: 3.12',
-        'Operating System :: POSIX',
-        'Operating System :: MacOS :: MacOS X',
-        'Operating System :: Microsoft :: Windows',
-    ],
-    author='MagicStack Inc',
-    author_email='hello@magic.io',
-    url='https://github.com/MagicStack/immutables',
-    license='Apache License, Version 2.0',
-    packages=['immutables'],
-    package_data={"immutables": ["py.typed", "*.pyi"]},
-    provides=['immutables'],
-    include_package_data=True,
     ext_modules=ext_modules,
-    install_requires=['typing-extensions>=3.7.4.3;python_version<"3.8"'],
-    extras_require=EXTRA_DEPENDENCIES,
 )