diff --git a/dist/PhyPraKit-1.2.5-py2.py3-none-any.whl b/dist/PhyPraKit-1.2.5-py2.py3-none-any.whl
deleted file mode 100644
index e90e1c9..0000000
Binary files a/dist/PhyPraKit-1.2.5-py2.py3-none-any.whl and /dev/null differ
diff --git a/dist/PhyPraKit-1.2.5.tar.gz b/dist/PhyPraKit-1.2.5.tar.gz
index 5e7bc4d..7cfe860 100644
Binary files a/dist/PhyPraKit-1.2.5.tar.gz and b/dist/PhyPraKit-1.2.5.tar.gz differ
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..4c08a73
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,62 @@
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
+
+[tool.distutils.bdist_wheel]
+universal = false
+
+[project]
+name = "PhyPraKit"
+dynamic = ["version"]
+description = "Tools for data visualisation and analysis in Physics Lab Courses"
+authors = [
+    {name = "Guenter Quast", email = "Guenter.Quast@online.de"},
+]
+
+keywords = ["karlsruhe", "data", "analysis", "visualization", "lab", "laboratory", 
+            "education", "university", "students", "physics"]
+
+requires-python = ">=3.6"
+readme = "README.md"
+license = {text = "MIT BSD 2-Clause License"}
+
+classifiers = [
+    "License :: OSI Approved :: MIT BSD 2-Clause License",
+    "Development Status :: 5 - stable",
+    "Intended Audience :: Education",
+    "Intended Audience :: Science/Research",
+    "Topic :: Education",
+    "Topic :: Scientific/Engineering",
+    "Topic :: Scientific/Engineering :: Physics",
+    "Topic :: Scientific/Engineering :: Data Acquisition",
+    "Topic :: Scientific/Engineering :: Visualization",
+    "Programming Language :: Python :: 3",
+    "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" ]
+
+dependencies = [
+    "numpy",
+    "matplotlib",
+    "scipy",
+    "pandas",
+    "iminuit",
+    "kafe2",
+    "uncertainties" ]
+
+[project.scripts]
+run_phyFit = 'PhyPraKit:run_phyFit.py'
+plot_Data =  'PhyPraKit:plotData.py'
+csv2yml =    'PhyPraKit:csv2yml.py'
+plotCSV =    'PhyPraKit:plotCSV.py' 
+smoothCSV =  'PhyPraKit:smoothCSV.py'
+ 
+[tool.setuptools.packages.find]
+include = ["PhyPraKit*"]
+
+[tool.setuptools.dynamic]
+version = {attr = "PhyPraKit.__version__"}
+
diff --git a/setup.py b/setup.py
index f23b070..a22af25 100644
--- a/setup.py
+++ b/setup.py
@@ -1,44 +1,3 @@
-import PhyPraKit  # from this directory
-import pathlib
+# setup.py for compatibility with old setuptools
 from setuptools import setup
-
-# The directory containing this file
-HERE = pathlib.Path(__file__).parent
-
-# The text of the README file
-README = (HERE / "README.md").read_text()
-
-
-setup(
-    name='PhyPraKit',
-    packages=['PhyPraKit'],
-    version=PhyPraKit.__version__,
-#
-    author='Guenter Quast',
-    author_email='Guenter.Quast@online.de',
-    url='http://www.etp.kit.edu/~quast/',
-    license='GNU Public Licence',
-    description='Tools for data visualisation and analysis in Physics Lab Courses',
-    long_description=README,
-    scripts=['tools/run_phyFit.py', 'tools/plotData.py',
-             'tools/csv2yml.py', 'tools/plotCSV.py' , 'tools/smoothCSV.py'],
-    classifiers=[
-    'Development Status :: 5 - Production/Stable',
-    #    'Development Status :: 4 - Beta',
-    # Specify the Python versions you support here. In particular, ensure
-    # that you indicate whether you support Python 2, Python 3 or both.
-    'Programming Language :: Python :: 2.7',
-    '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',
-    ],
-    install_requires=[\
-        "NumPy >= 1.19",
-        "SciPy >= 1.5",
-        "matplotlib >= 3",
-        "iminuit >1.99",
-        "kafe2 >=2.6.0",]
-)
+setup() # reads from pyproject.toml
diff --git a/setup.py.bak b/setup.py.bak
new file mode 100644
index 0000000..f23b070
--- /dev/null
+++ b/setup.py.bak
@@ -0,0 +1,44 @@
+import PhyPraKit  # from this directory
+import pathlib
+from setuptools import setup
+
+# The directory containing this file
+HERE = pathlib.Path(__file__).parent
+
+# The text of the README file
+README = (HERE / "README.md").read_text()
+
+
+setup(
+    name='PhyPraKit',
+    packages=['PhyPraKit'],
+    version=PhyPraKit.__version__,
+#
+    author='Guenter Quast',
+    author_email='Guenter.Quast@online.de',
+    url='http://www.etp.kit.edu/~quast/',
+    license='GNU Public Licence',
+    description='Tools for data visualisation and analysis in Physics Lab Courses',
+    long_description=README,
+    scripts=['tools/run_phyFit.py', 'tools/plotData.py',
+             'tools/csv2yml.py', 'tools/plotCSV.py' , 'tools/smoothCSV.py'],
+    classifiers=[
+    'Development Status :: 5 - Production/Stable',
+    #    'Development Status :: 4 - Beta',
+    # Specify the Python versions you support here. In particular, ensure
+    # that you indicate whether you support Python 2, Python 3 or both.
+    'Programming Language :: Python :: 2.7',
+    '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',
+    ],
+    install_requires=[\
+        "NumPy >= 1.19",
+        "SciPy >= 1.5",
+        "matplotlib >= 3",
+        "iminuit >1.99",
+        "kafe2 >=2.6.0",]
+)