diff --git a/pyproject.toml b/pyproject.toml
index da02e5c0..24e7dc56 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,6 +7,62 @@ requires = [
   "wheel>=0.36",
 ]
 
+[project]
+name = "pytest-asyncio"
+description = "Pytest support for asyncio"
+readme.content-type = "text/x-rst"
+readme.file = "README.rst"
+license.text = "Apache 2.0"
+authors = [
+  { name = "Tin Tvrtković <tinchester@gmail.com>", email = "tinchester@gmail.com" },
+]
+requires-python = ">=3.9"
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Framework :: AsyncIO",
+  "Framework :: Pytest",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: Apache Software License",
+  "Programming Language :: Python :: 3 :: Only",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Topic :: Software Development :: Testing",
+  "Typing :: Typed",
+]
+dynamic = [
+  "version",
+]
+
+dependencies = [
+  "pytest>=8.2,<9",
+]
+optional-dependencies.docs = [
+  "sphinx>=5.3",
+  "sphinx-rtd-theme>=1",
+]
+optional-dependencies.testing = [
+  "coverage>=6.2",
+  "hypothesis>=5.7.1",
+]
+urls."Bug Tracker" = "https://github.com/pytest-dev/pytest-asyncio/issues"
+urls.Changelog = "https://pytest-asyncio.readthedocs.io/en/latest/reference/changelog.html"
+urls.Documentation = "https://pytest-asyncio.readthedocs.io"
+urls.Homepage = "https://github.com/pytest-dev/pytest-asyncio"
+urls."Source Code" = "https://github.com/pytest-dev/pytest-asyncio"
+entry-points.pytest11.asyncio = "pytest_asyncio.plugin"
+
+[tool.setuptools]
+packages = [
+  "pytest_asyncio",
+]
+include-package-data = true
+license-files = [
+  "LICENSE",
+]
+
 [tool.setuptools_scm]
 write_to = "pytest_asyncio/_version.py"
 
@@ -17,3 +73,35 @@ lint.select = [
   "F", # pyflakes
   "W", # pycodestyle
 ]
+
+[tool.pytest.ini_options]
+python_files = [
+  "test_*.py",
+  "*_example.py",
+]
+addopts = "-rsx --tb=short"
+testpaths = [
+  "docs",
+  "tests",
+]
+asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"
+junit_family = "xunit2"
+filterwarnings = [
+  "error",
+  "ignore:The event_loop fixture provided by pytest-asyncio has been redefined.*:DeprecationWarning",
+]
+
+[tool.coverage.run]
+source = [
+  "pytest_asyncio",
+]
+branch = true
+data_file = "coverage/coverage"
+omit = [
+  "*/_version.py",
+]
+parallel = true
+
+[tool.coverage.report]
+show_missing = true
diff --git a/setup.cfg b/setup.cfg
index 886b9d62..f68f54b8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,76 +1,18 @@
 [metadata]
-name = pytest-asyncio
+# Not everything is in in pyproject.toml because of this issue:
+; Traceback (most recent call last):
+;  File "/tmp/build-env-rud8b5r6/lib/python3.12/site-packages/setuptools/config/expand.py", line 69, in __getattr__
+;    return next(
+;           ^^^^^
+;StopIteration
+;
+;The above exception was the direct cause of the following exception:
+;
+;Traceback (most recent call last):
+;  File "/tmp/build-env-rud8b5r6/lib/python3.12/site-packages/setuptools/config/expand.py", line 183, in read_attr
+;    return getattr(StaticModule(module_name, spec), attr_name)
+;           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+;  File "/tmp/build-env-rud8b5r6/lib/python3.12/site-packages/setuptools/config/expand.py", line 75, in __getattr__
+;    raise AttributeError(f"{self.name} has no attribute {attr}") from e
+;AttributeError: pytest_asyncio has no attribute __version__
 version = attr: pytest_asyncio.__version__
-url = https://github.com/pytest-dev/pytest-asyncio
-project_urls =
-  Documentation = https://pytest-asyncio.readthedocs.io
-  Changelog = https://pytest-asyncio.readthedocs.io/en/latest/reference/changelog.html
-  Source Code = https://github.com/pytest-dev/pytest-asyncio
-  Bug Tracker = https://github.com/pytest-dev/pytest-asyncio/issues
-description = Pytest support for asyncio
-long_description = file: README.rst
-long_description_content_type = text/x-rst
-author = Tin Tvrtković <tinchester@gmail.com>
-author_email = tinchester@gmail.com
-license = Apache 2.0
-license_files = LICENSE
-classifiers =
-  Development Status :: 4 - Beta
-
-  Intended Audience :: Developers
-
-  License :: OSI Approved :: Apache Software License
-
-  Programming Language :: Python :: 3.9
-  Programming Language :: Python :: 3.10
-  Programming Language :: Python :: 3.11
-  Programming Language :: Python :: 3.12
-  Programming Language :: Python :: 3.13
-
-  Topic :: Software Development :: Testing
-
-  Framework :: AsyncIO
-  Framework :: Pytest
-  Typing :: Typed
-
-[options]
-python_requires = >=3.9
-packages = pytest_asyncio
-include_package_data = True
-
-# Always adjust requirements.txt and pytest-min-requirements.txt when changing runtime dependencies
-install_requires =
-  pytest >= 8.2,<9
-
-[options.extras_require]
-testing =
-  coverage >= 6.2
-  hypothesis >= 5.7.1
-docs =
-  sphinx >= 5.3
-  sphinx-rtd-theme >= 1.0
-
-[options.entry_points]
-pytest11 =
-    asyncio = pytest_asyncio.plugin
-
-[coverage:run]
-source = pytest_asyncio
-branch = true
-data_file = coverage/coverage
-omit = */_version.py
-parallel = true
-
-[coverage:report]
-show_missing = true
-
-[tool:pytest]
-python_files = test_*.py *_example.py
-addopts = -rsx --tb=short
-testpaths = docs tests
-asyncio_mode = auto
-asyncio_default_fixture_loop_scope = function
-junit_family=xunit2
-filterwarnings =
-  error
-  ignore:The event_loop fixture provided by pytest-asyncio has been redefined.*:DeprecationWarning