diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..978df5a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,34 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "decorator"
+authors = [
+    {name = "Michele Simionato", email = "michele.simionato@gmail.com"},
+]
+description = "Decorators for Humans"
+readme = "README.rst"
+dynamic = ["version"]
+requires-python = ">=3.8"
+keywords = ["decorators"]
+license = {text = "BSD-2-Clause"}
+classifiers = [
+  'Development Status :: 5 - Production/Stable',
+  'Intended Audience :: Developers',
+  'License :: OSI Approved :: BSD License',
+  'Natural Language :: English',
+  'Operating System :: OS Independent',
+  'Programming Language :: Python',
+  '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 :: Software Development :: Libraries',
+  'Topic :: Utilities']
+
+[tool.setuptools.dynamic]
+version.attr = "decorator.__version__"
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 46b7c21..0000000
--- a/setup.py
+++ /dev/null
@@ -1,39 +0,0 @@
-from setuptools import setup
-
-dic = dict(__file__=None)
-exec(open('src/decorator.py').read(), dic)  # extract the __version__
-VERSION = dic['__version__']
-
-
-if __name__ == '__main__':
-    setup(name='decorator',
-          version=VERSION,
-          description='Decorators for Humans',
-          long_description=open('README.rst').read(),
-          author='Michele Simionato',
-          author_email='michele.simionato@gmail.com',
-          url='https://github.com/micheles/decorator',
-          license="BSD-2-Clause",
-          package_dir={'': 'src'},
-          py_modules=['decorator'],
-          keywords="decorators generic utility",
-          platforms=["All"],
-          python_requires='>=3.7',
-          classifiers=['Development Status :: 5 - Production/Stable',
-                       'Intended Audience :: Developers',
-                       'License :: OSI Approved :: BSD License',
-                       'Natural Language :: English',
-                       'Operating System :: OS Independent',
-                       'Programming Language :: Python',
-                       '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 :: Software Development :: Libraries',
-                       'Topic :: Utilities'],
-          test_suite='tests',
-          zip_safe=False)
diff --git a/src/decorator.py b/src/decorator.py
index da3646c..406a9b5 100644
--- a/src/decorator.py
+++ b/src/decorator.py
@@ -41,7 +41,7 @@
 from contextlib import _GeneratorContextManager
 from inspect import getfullargspec, iscoroutinefunction, isgeneratorfunction
 
-__version__ = '5.1.1'
+__version__ = '5.2.0'
 
 DEF = re.compile(r'\s*def\s*([_\w][_\w\d]*)\s*\(')
 POS = inspect.Parameter.POSITIONAL_OR_KEYWORD