diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..03d07f7
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,40 @@
+[build-system]
+requires = ["setuptools",]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "retrying"
+version = "1.4.2-dev"
+description = "Retrying"
+authors = [
+    {name = "Greg Roodt"},
+]
+license = "Apache-2.0"
+readme = "README.rst"
+requires-python = ">=3.6"
+classifiers = [
+    "Intended Audience :: Developers",
+    "Natural Language :: English",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.6",
+    "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",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Topic :: Internet",
+    "Topic :: Utilities",
+]
+keywords = ["decorator", "decorators", "retry", "retrying", "exception", "exponential", "backoff"]
+
+[project.urls]
+Homepage = "https://github.com/groodt/retrying"
+Repository = "https://github.com/groodt/retrying"
+
+[tool.setuptools]
+py-modules = ["retrying"]
diff --git a/setup.py b/setup.py
index ea111e9..6c66161 100644
--- a/setup.py
+++ b/setup.py
@@ -1,45 +1,8 @@
 #!/usr/bin/env python
-try:
-    from setuptools import setup
-except ImportError:
-    from distutils.core import setup
+"""
+Minimal setup.py for legacy compatibility.
+All configuration is in pyproject.toml.
+"""
+from setuptools import setup
 
-CLASSIFIERS = [
-    "Intended Audience :: Developers",
-    "Natural Language :: English",
-    "License :: OSI Approved :: Apache Software License",
-    "Programming Language :: Python",
-    "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3 :: Only",
-    "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",
-    "Programming Language :: Python :: 3.12",
-    "Programming Language :: Python :: 3.13",
-    "Programming Language :: Python :: Implementation :: CPython",
-    "Topic :: Internet",
-    "Topic :: Utilities",
-]
-
-with open("README.rst") as file_readme:
-    readme = file_readme.read()
-
-with open("HISTORY.rst") as file_history:
-    history = file_history.read()
-
-setup(
-    name="retrying",
-    version="1.4.2-dev",
-    description="Retrying",
-    long_description=readme + "\n\n" + history,
-    author="Greg Roodt",
-    license="Apache 2.0",
-    url="https://github.com/groodt/retrying",
-    classifiers=CLASSIFIERS,
-    keywords="decorator decorators retry retrying exception exponential backoff",
-    py_modules=["retrying"],
-    test_suite="test_retrying",
-    python_requires=">=3.6",
-)
+setup()