diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1734f3f..a4e25ff 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -33,8 +33,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Install tox
-        # https://github.com/tox-dev/tox/issues/3602
-        run: python -m pip install 'tox<4.30'
+        run: python -m pip install tox
       - name: Run ruff format
         run: |
           tox -e ruff-format
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 046a397..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1 +0,0 @@
-include README.md LICENSE.txt
diff --git a/pyproject.toml b/pyproject.toml
index d18bfe5..4e93229 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,42 @@ requires = [
 ]
 build-backend = 'setuptools.build_meta'
 
+[project]
+name = "varlink"
+description = "Python implementation of the Varlink protocol"
+readme = "README.md"
+requires-python = ">=3.9"
+dynamic = ["version"]
+authors = [
+    {name = "Lars Karlitski", email = "lars@karlitski.net"},
+    {name = "Harald Hoyer", email = "harald@hoyer.xyz"}
+]
+keywords = ["ipc", "varlink", "rpc"]
+license = "Apache-2.0"
+license-files = ["LICENSE.txt"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "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 :: System :: Networking",
+]
+
+[project.urls]
+Homepage = "https://varlink.org/"
+Repository = "https://github.com/varlink/python"
+Issues = "https://github.com/varlink/python/issues"
+
+[tool.setuptools.package-data]
+varlink = [
+    "*.varlink"
+]
+
 [tool.setuptools_scm]
 local_scheme = "no-local-version"
 
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index ef2e2bb..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,37 +0,0 @@
-[metadata]
-name = varlink
-description = Python implementation of the Varlink protocol
-long_description = file: README.md
-long_description_content_type = text/markdown
-author = Lars Karlitski<lars@karlitski.net>, Harald Hoyer<harald@hoyer.xyz>
-author_email = harald@hoyer.xyz
-url = https://github.com/varlink/python
-keywords = ipc, varlink, rpc
-license = ASL 2.0
-classifiers =
-    Development Status :: 5 - Production/Stable
-    Intended Audience :: Developers
-    License :: OSI Approved :: Apache Software License
-    Programming Language :: Python
-    Programming Language :: Python :: 3
-    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 :: System :: Networking
-
-[options]
-zip_safe = False
-python_requires=>=3.9
-include_package_data = True
-packages = varlink
-setup_requires =
-  setuptools_scm
-
-[options.package_data]
-varlink = *.varlink
-
-[bdist_wheel]
-universal = 1
-
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 07b902d..0000000
--- a/setup.py
+++ /dev/null
@@ -1,15 +0,0 @@
-from setuptools import setup
-
-
-def local_scheme(_):
-    """Enables a version format so that upload to TestPyPI is successful.
-    For example: 2.6.2.dev8
-    See https://github.com/pypa/setuptools_scm/issues/342.
-    """
-    return ""
-
-
-setup(
-    use_scm_version={"local_scheme": "no-local-version"},
-    setup_requires=["setuptools_scm"],
-)