diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index bfc298e..9cb1c31 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -30,9 +30,11 @@ repos:
       - id: mypy
         # Passing filenames to mypy can do odd things. See
         # https://github.com/pre-commit/mirrors-mypy/issues/33.
-        # mypy.ini determines the set of files that will actually be checked.
+        # pyproject.toml determines the set of files that will actually be
+        # checked.
         pass_filenames: false
-        # The pre-commit hook passes some options, but we set options in mypy.ini.
+        # The pre-commit hook passes some options, but we set options in
+        # pyproject.toml.
         args: []
         additional_dependencies: [
           'async-timeout==4.0.3',
diff --git a/mypy.ini b/mypy.ini
deleted file mode 100644
index c0ead5e..0000000
--- a/mypy.ini
+++ /dev/null
@@ -1,6 +0,0 @@
-[mypy]
-python_version = 3.8
-files = src/aiokatcp, examples, tests
-
-[mypy-async_solipsism.*]
-ignore_missing_imports = True
diff --git a/pyproject.toml b/pyproject.toml
index cf529a9..c755884 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,58 @@
 [build-system]
 requires = ["setuptools", "setuptools_scm"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "aiokatcp"
+authors = [
+    {name = "Bruce Merry", email = "bmerry@sarao.ac.za"}
+]
+description = "Asynchronous I/O implementation of the katcp protocol"
+readme = "README.rst"
+requires-python = ">=3.8"
+license = {text = "BSD-3-Clause"}
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Framework :: AsyncIO",
+    "License :: OSI Approved :: BSD License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Scientific/Engineering :: Astronomy",
+]
+keywords = [
+    "asyncio",
+    "katcp",
+]
+dependencies = [
+    "async-timeout",
+    "decorator>=4.1",
+    "katcp-codec",
+    "typing-extensions",
+]
+dynamic = ["version"]
+
+[project.urls]
+Homepage = "https://github.com/ska-sa/aiokatcp"
+Repository = "https://github.com/ska-sa/aiokatcp"
+Documentation = "https://aiokatcp.readthedocs.io/"
+Changelog = "https://aiokatcp.readthedocs.io/en/latest/changelog.html"
+
+[project.scripts]
+katcpcmd = "aiokatcp.tools.katcpcmd:main"
+
+[project.optional-dependencies]
+test = [
+    "async-solipsism",
+    "pytest",
+    "pytest-asyncio",
+    "pytest-mock",
+]
+doc = [
+    "sphinx",
+    "sphinx-rtd-theme",
+]
 
 [tool.setuptools_scm]
 version_file = "src/aiokatcp/_version.py"
@@ -10,3 +63,10 @@ line_length = 100
 
 [tool.black]
 line-length = 100
+
+[tool.mypy]
+python_version = "3.8"
+files = ["src/aiokatcp", "examples", "tests"]
+[[tool.mypy.overrides]]
+module = "async_solipsism.*"
+ignore_missing_imports = true
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 1cbdb6c..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,53 +0,0 @@
-[metadata]
-name = aiokatcp
-description = Asynchronous I/O implementation of the katcp protocol
-long_description = file: README.rst
-long_description_content_type = text/x-rst
-author = Bruce Merry
-author_email = bmerry@sarao.ac.za
-url = https://github.com/ska-sa/aiokatcp
-license = BSD
-classifiers =
-    Development Status :: 5 - Production/Stable
-    Intended Audience :: Developers
-    Framework :: AsyncIO
-    License :: OSI Approved :: BSD License
-    Operating System :: OS Independent
-    Programming Language :: Python :: 3
-    Topic :: Software Development :: Libraries :: Python Modules
-    Topic :: Scientific/Engineering :: Astronomy
-keywords =
-    asyncio
-    katcp
-
-[options]
-package_dir =
-    = src
-packages = find:
-install_requires =
-    async-timeout
-    decorator>=4.1
-    katcp-codec
-    typing-extensions
-python_requires = >=3.8
-zip_safe = False  # For py.typed
-
-[options.extras_require]
-test =
-    async-solipsism
-    pytest
-    pytest-asyncio
-    pytest-mock
-doc =
-    sphinx
-    sphinx-rtd-theme
-
-[options.packages.find]
-where = src
-
-[options.package_data]
-* = py.typed
-
-[options.entry_points]
-console_scripts =
-    katcpcmd = aiokatcp.tools.katcpcmd:main