diff --git a/pyproject.toml b/pyproject.toml
index a853c57..5b57dbc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,48 @@
 [build-system]
-requires = ["setuptools>=56", "setuptools_scm[toml]>=3.4.1"]
+requires = ["setuptools>=61.2", "setuptools_scm[toml]>=3.4.1"]
 build-backend = "setuptools.build_meta"
 
+[project]
+name = "jaraco.classes"
+authors = [
+	{ name = "Jason R. Coombs", email = "jaraco@jaraco.com" },
+]
+description = "Utility functions for Python class constructs"
+readme = "README.rst"
+classifiers = [
+	"Development Status :: 5 - Production/Stable",
+	"Intended Audience :: Developers",
+	"License :: OSI Approved :: MIT License",
+	"Programming Language :: Python :: 3",
+	"Programming Language :: Python :: 3 :: Only",
+]
+requires-python = ">=3.8"
+dependencies = ["more_itertools"]
+dynamic = ["version"]
+
+[project.optional-dependencies]
+testing = [
+	# upstream
+	"pytest >= 6",
+	"pytest-checkdocs >= 2.4",
+	"pytest-cov",
+	"pytest-mypy",
+	"pytest-enabler >= 2.2",
+	"pytest-ruff >= 0.2.1",
+
+	# local
+]
+docs = [
+	# upstream
+	"sphinx >= 3.5",
+	"jaraco.packaging >= 9.3",
+	"rst.linker >= 1.9",
+	"furo",
+	"sphinx-lint",
+	# tidelift
+	"jaraco.tidelift >= 1.4",
+
+	# local
+]
+
 [tool.setuptools_scm]
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 2e62979..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,46 +0,0 @@
-[metadata]
-name = jaraco.classes
-author = Jason R. Coombs
-author_email = jaraco@jaraco.com
-description = Utility functions for Python class constructs
-long_description = file:README.rst
-url = https://github.com/jaraco/jaraco.classes
-classifiers =
-	Development Status :: 5 - Production/Stable
-	Intended Audience :: Developers
-	License :: OSI Approved :: MIT License
-	Programming Language :: Python :: 3
-	Programming Language :: Python :: 3 :: Only
-
-[options]
-include_package_data = true
-python_requires = >=3.8
-install_requires =
-	more_itertools
-
-[options.extras_require]
-testing =
-	# upstream
-	pytest >= 6
-	pytest-checkdocs >= 2.4
-	pytest-cov
-	pytest-mypy
-	pytest-enabler >= 2.2
-	pytest-ruff >= 0.2.1
-
-	# local
-
-docs =
-	# upstream
-	sphinx >= 3.5
-	jaraco.packaging >= 9.3
-	rst.linker >= 1.9
-	furo
-	sphinx-lint
-
-	# tidelift
-	jaraco.tidelift >= 1.4
-
-	# local
-
-[options.entry_points]