diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..2e6d3f1
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,53 @@
+[build-system]
+requires = [
+    "setuptools>=77",
+    "wheel",
+    "setuptools-scm",
+]
+
+[project]
+name = "circuitpython-build-tools"
+requires-python = ">=3.10"
+description = "CircuitPython library build tools"
+readme = "README.md"
+authors = [
+    {name = "Scott Shawcroft", email = "scott@adafruit.com"}
+]
+keywords = [
+    "circuitpython",
+]
+license = "MIT"
+classifiers = [
+    # https://pypi.org/pypi?%3Aaction=list_classifiers
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Topic :: Software Development :: Libraries",
+    "Programming Language :: Python :: 3",
+]
+dynamic = ["version", "dependencies"]
+
+[project.scripts]
+circuitpython-build-bundles = "circuitpython_build_tools.scripts.build_bundles:build_bundles"
+circuitpython-mpy-cross = "circuitpython_build_tools.scripts.circuitpython_mpy_cross:main"
+
+[project.urls]
+Source =  "https://github.com/adafruit/circuitpython-build-tools"
+Tracker = "https://github.com/adafruit/circuitpython-build-tools/issues"
+
+[tool.setuptools]
+zip-safe = false
+packages = [
+    "circuitpython_build_tools",
+    "circuitpython_build_tools.scripts",
+]
+
+[tool.setuptools.dynamic]
+dependencies = {file = ["requirements.txt"]}
+
+[tool.setuptools_scm]
+# It would be nice to include the commit hash in the version, but that
+# can't be done in a PEP 440-compatible way.
+version_scheme = "no-guess-dev"
+# Test PyPI does not support local versions.
+local_scheme = "no-local-version"
+fallback_version = "0.0.0"
diff --git a/requirements.txt b/requirements.txt
index b11b4c5..6533272 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,5 @@
 Click
 requests
 semver
-wheel
 tomli; python_version < "3.11"
 platformdirs
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 4358300..0000000
--- a/setup.py
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env python
-
-from setuptools import setup
-
-setup(name='circuitpython-build-tools',
-      use_scm_version=True,
-      setup_requires=["setuptools_scm"],
-      description='CircuitPython library build tools',
-      author='Scott Shawcroft',
-      author_email='scott@adafruit.com',
-      url='https://www.adafruit.com/',
-      packages=['circuitpython_build_tools',
-                'circuitpython_build_tools.scripts'],
-      package_data={'circuitpython_build_tools': ['data/mpy-cross-*']},
-      zip_safe=False,
-      python_requires='>=3.10',
-      install_requires=['Click', 'requests', 'semver', 'tomli; python_version < "3.11"', 'platformdirs'],
-      entry_points='''
-        [console_scripts]
-        circuitpython-build-bundles=circuitpython_build_tools.scripts.build_bundles:build_bundles
-        circuitpython-mpy-cross=circuitpython_build_tools.scripts.circuitpython_mpy_cross:main
-      '''
-      )