diff --git a/pyproject.toml b/pyproject.toml
index fed528d..b1b95a1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,32 @@
 [build-system]
-requires = ["setuptools"]
+requires = ["setuptools>=61.0.0"]
 build-backend = "setuptools.build_meta"
+
+[project]
+name = "mypy_extensions"
+version = "1.0.0-dev"
+description = "Type system extensions for programs checked with the mypy type checker."
+readme = "README.md"
+license = {file = "LICENSE"}
+requires-python = ">=3.7"
+authors = [
+    {name = "The mypy developers", email = "jukka.lehtosalo@iki.fi"},
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "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 :: 3.11",
+    "Topic :: Software Development",
+]
+[project.urls]
+Repository = "https://github.com/python/mypy_extensions"
+
+[tool.setuptools]
+py-modules = ["mypy_extensions"]
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 6eee9ad..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-[metadata]
-name = mypy_extensions
-version = 1.0.0-dev
-author = The mypy developers
-author_email = jukka.lehtosalo@iki.fi
-license = MIT License
-description = Type system extensions for programs checked with the mypy type checker.
-url = https://github.com/python/mypy_extensions
-long_description = Mypy Extensions
-    ===============
-
-    The "mypy_extensions" module defines extensions to the standard "typing" module
-    that are supported by the mypy type checker and the mypyc compiler.
-
-classifiers =
-    Development Status :: 5 - Production/Stable
-    Environment :: Console
-    Intended Audience :: Developers
-    License :: OSI Approved :: MIT License
-    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 :: 3.11
-    Topic :: Software Development
-
-[options]
-py_modules = mypy_extensions
-python_requires = >=3.7