diff --git a/.gitignore b/.gitignore
index 6e1d4a7..71e10d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 *.pyc
-__pycache__
+__pycache__/
 
 *.idea
 
@@ -7,6 +7,7 @@ build/
 dist/
 *.egg-info/
 .mypy_cache/
+.pytest_cache/
 
 *.swp
 *.swo
diff --git a/klamath/LICENSE.md b/klamath/LICENSE.md
new file mode 120000
index 0000000..7eabdb1
--- /dev/null
+++ b/klamath/LICENSE.md
@@ -0,0 +1 @@
+../LICENSE.md
\ No newline at end of file
diff --git a/klamath/README.md b/klamath/README.md
new file mode 120000
index 0000000..32d46ee
--- /dev/null
+++ b/klamath/README.md
@@ -0,0 +1 @@
+../README.md
\ No newline at end of file
diff --git a/klamath/VERSION.py b/klamath/VERSION.py
deleted file mode 100644
index b99a6d4..0000000
--- a/klamath/VERSION.py
+++ /dev/null
@@ -1,4 +0,0 @@
-""" VERSION defintion. THIS FILE IS MANUALLY PARSED BY setup.py and REQUIRES A SPECIFIC FORMAT """
-__version__ = '''
-1.2
-'''.strip()
diff --git a/klamath/__init__.py b/klamath/__init__.py
index 7a8c54e..a7e137b 100644
--- a/klamath/__init__.py
+++ b/klamath/__init__.py
@@ -33,6 +33,6 @@ from . import records
 from . import elements
 from . import library
 
-from .VERSION import __version__
-
 __author__ = 'Jan Petykiewicz'
+__version__ = '1.2'
+
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..11d7918
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,58 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "klamath"
+description = "GDSII format reader/writer"
+readme = "README.md"
+license = { file = "LICENSE.md" }
+authors = [
+    { name="Jan Petykiewicz", email="jan@mpxd.net" },
+    ]
+homepage = "https://mpxd.net/code/jan/klamath"
+repository = "https://mpxd.net/code/jan/klamath"
+keywords = [
+    "layout",
+    "gds",
+    "gdsii",
+    "gds2",
+    "Calma",
+    "stream",
+    "design",
+    "CAD",
+    "EDA",
+    "electronics",
+    "photonics",
+    "IC",
+    "mask",
+    "pattern",
+    "drawing",
+    "lithography",
+    "litho",
+    "geometry",
+    "geometric",
+    "polygon",
+    "vector",
+    ]
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Information Technology",
+    "Intended Audience :: Manufacturing",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
+    "Topic :: Scientific/Engineering :: Electronic Design Automation (EDA)",
+    ]
+requires-python = ">=3.8"
+include = [
+    "LICENSE.md"
+    ]
+dynamic = ["version"]
+dependencies = [
+    "numpy~=1.21",
+    ]
+
+[tool.hatch.version]
+path = "klamath/__init__.py"
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 732b4c9..0000000
--- a/setup.py
+++ /dev/null
@@ -1,63 +0,0 @@
-#!/usr/bin/env python3
-
-from setuptools import setup, find_packages
-
-
-with open('README.md', 'r') as f:
-    long_description = f.read()
-
-with open('klamath/VERSION.py', 'rt') as f:
-    version = f.readlines()[2].strip()
-
-setup(name='klamath',
-      version=version,
-      description='GDSII format reader/writer',
-      long_description=long_description,
-      long_description_content_type='text/markdown',
-      author='Jan Petykiewicz',
-      author_email='jan@mpxd.net',
-      url='https://mpxd.net/code/jan/klamath',
-      packages=find_packages(),
-      package_data={
-          'klamath': ['py.typed'],
-      },
-      install_requires=[
-            'numpy',
-      ],
-      classifiers=[
-            'Programming Language :: Python :: 3',
-            'Development Status :: 5 - Production/Stable',
-            'Intended Audience :: Developers',
-            'Intended Audience :: Information Technology',
-            'Intended Audience :: Manufacturing',
-            'Intended Audience :: Science/Research',
-            'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
-            'Topic :: Scientific/Engineering :: Electronic Design Automation (EDA)',
-      ],
-      keywords=[
-          'layout',
-          'design',
-          'CAD',
-          'EDA',
-          'electronics',
-          'photonics',
-          'IC',
-          'mask',
-          'pattern',
-          'drawing',
-          'lithography',
-          'litho',
-          'geometry',
-          'geometric',
-          'polygon',
-          'gds',
-          'gdsii',
-          'gds2',
-          'stream',
-          'vector',
-          'freeform',
-          'manhattan',
-          'angle',
-          'Calma',
-      ],
-      )