diff --git a/.githooks/pre-commit/pre-commit b/.githooks/pre-commit/pre-commit
deleted file mode 100755
index fad6514..0000000
--- a/.githooks/pre-commit/pre-commit
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/usr/bin/env sh
-python setup.py test
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..5181b64
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,17 @@
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+# This configures updates via dependabot only for github actions.
+
+version: 2
+updates:
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: "monthly"
+  cooldown:
+    default-days: 5
+  groups:
+    github-actions:
+      patterns:
+        - "*"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..aeeb0c2
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,57 @@
+name: Python package
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+env:
+  PIP_DISABLE_PIP_VERSION_CHECK: "1"
+  PIP_PROGRESS_BAR: "off"
+
+permissions: {}
+
+jobs:
+  tests:
+    name: Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+        - '3.9'
+        - '3.10'
+        - '3.11'
+        - '3.12'
+        - '3.13'
+        - '3.14'
+    steps:
+    - uses: actions/checkout@v6.0.1
+      with:
+        persist-credentials: false
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v6.1.0
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install package
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install .[dev]
+
+    - name: Run tests
+      run: |
+        python -m pytest
+
+    - name: Build Sphinx documentation
+      run: |
+        sphinx-build -b html --nitpicky --fail-on-warning --keep-going docs docs/_build/html
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
new file mode 100644
index 0000000..63f74a8
--- /dev/null
+++ b/.github/workflows/pypi-publish.yml
@@ -0,0 +1,67 @@
+name: Publish Python Package
+# Publishes tO PyPI for releases created in GitHub UI
+# Note: For draft status, publishing is not triggered.
+# Builds a packages for new tags "v1.2.3" or "v1.2.3.something" on master
+
+on:
+  push:
+    tags:
+      # GitHub glob matching is limited [1]. So we can't define a pattern matching
+      # pep 440 version definition [N!]N(.N)*[{a|b|rc}N][.postN][.devN]
+      - 'v[0-9]+.[0-9]+.[0-9]+.?*'
+  release:
+    types: [published]
+
+permissions: {}
+
+jobs:
+  build:
+    name: Build Python 🐍 distributions 📦 for publishing
+    # Don't try to publish from forks
+    if: github.repository == 'NatLibFi/Skosify'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6.0.1
+        with:
+          persist-credentials: false
+
+      - name: Set up Python
+        uses: actions/setup-python@v6.1.0
+        with:
+          python-version: 3.13
+
+      - name: Install hatch
+        run: pipx install hatch
+
+      - name: Build source and wheel archives
+        run: hatch build
+
+      - name: Store built distribution
+        uses: actions/upload-artifact@v6.0.0
+        with:
+          name: distribution-files
+          path: dist/
+
+  pypi-publish:
+    name: Build and publish Python 🐍 package 📦 to PyPI and TestPyPI
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi-release
+      url: https://pypi.org/p/skosify
+    permissions:
+      id-token: write  # this permission is mandatory for trusted publishing
+    steps:
+      - name: Download built distribution
+        uses: actions/download-artifact@v7.0.0
+        with:
+          name: distribution-files
+          path: dist
+
+      - name: Publish package 📦 to PyPI
+        if: github.event_name == 'release'
+        uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e  # v1.13.0
+        with:
+          verbose: true
+
+# [1] https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
deleted file mode 100644
index 9aa9711..0000000
--- a/.github/workflows/python-package.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-name: Python package
-
-on: [push, pull_request]
-jobs:
-  test-job:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
-
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install .
-    - name: Test
-      run: |
-        python setup.py test
-
-  build-and-publish-job:
-    needs: test-job
-    runs-on: ubuntu-20.04
-    if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python 3.9
-      uses: actions/setup-python@v2
-      with:
-        python-version: '3.9'
-    - name: Build distribution
-      run: |
-        python -m pip install wheel
-        python setup.py sdist bdist_wheel
-    - name: Publish distribution
-      uses: pypa/gh-action-pypi-publish@release/v1.4
-      with:
-        user: __token__
-        password: ${{ secrets.PYPI_API_TOKEN }}
diff --git a/.gitignore b/.gitignore
index f887813..6bfad66 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,3 +53,5 @@ coverage.xml
 # Sphinx documentation
 docs/_build/
 
+# Autogenerated version file
+skosify/_version.py
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 585a64f..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1 +0,0 @@
-include LICENSE CHANGELOG.rst pytest.ini
diff --git a/Makefile b/Makefile
index 5dc0ec7..04edbcc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,11 @@
 .PHONY: test docs build
 
 test:
-	python setup.py test
+	pytest
 
 doc:
 	rm -rf docs/_build
 	$(MAKE) -C docs html
 
 build:
-	python setup.py bdist_wheel
+	hatch build
diff --git a/README.rst b/README.rst
index a7a4a9b..c0db11b 100644
--- a/README.rst
+++ b/README.rst
@@ -1,7 +1,7 @@
 .. image:: https://badge.fury.io/py/skosify.svg
    :target: https://badge.fury.io/py/skosify.svg    
-.. image:: https://travis-ci.org/NatLibFi/Skosify.svg?branch=master
-   :target: https://travis-ci.org/NatLibFi/Skosify
+.. image:: https://github.com/NatLibFi/Skosify/workflows/CI/badge.svg
+   :target: https://github.com/NatLibFi/Skosify/actions
 .. image:: https://readthedocs.org/projects/skosify/badge/?version=latest
    :target: http://skosify.rtfd.io/ 
 .. image:: https://codecov.io/gh/NatLibFi/Skosify/branch/master/graph/badge.svg
@@ -18,12 +18,60 @@ the SKOS specification and related best practices.
 Installation
 ============
 
-Skosify requires Python 3.6+.
+Skosify requires Python 3.9+.
+
+If you only want to use the command line interface it is suggested to install
+with `uv tool <https://docs.astral.sh/uv/concepts/tools/>`_ 
+or `pipx <https://pypa.github.io/pipx/>`_. 
+Both simplify installing and managing python command line applications.
+
+.. code-block:: console
+
+    uv tool install skosify
+
+
+or
+
+.. code-block:: console
+
+    pipx install skosify
+
+
+Of course you also use pip to install as for any other Python package.
 
 .. code-block:: console
 
     pip install --upgrade skosify
 
+
+To help testing locally with multiple Python versions, a 
+`tox <https://tox.wiki/>`_ configuration file is provided (tox.ini).
+
+.. code-block:: console
+
+    uv tool install tox
+
+Execute `tox` in the root of the repo to run the full set of tests.
+Optionally just run specific environments, for example only Python 3.12:
+
+.. code-block:: console
+
+    tox -e py312
+
+The package can be built locally with any PEP517-conform build tool, for example 
+`build <https://pypi.org/project/build/>`_, 
+`uv build <https://docs.astral.sh/uv/concepts/build-backend/>`_
+or `hatch <https://pypi.org/project/hatch/>`_.
+Of course, you need to have the build tool installed. 
+For example, to use hatch as in gh-actions, run:
+
+.. code-block:: console
+
+    uvx hatch build
+
+This command uses `uvx <https://docs.astral.sh/uv/guides/tools/>`_
+to run hatch with out installing it permanently.
+
 Usage
 =====
 
@@ -79,6 +127,7 @@ Author and Contributors
 -  Jakob Voß
 -  Dan Michael O. Heggø
 -  Alex Kourijoki
+-  David Linke
 
 See also
 ========
diff --git a/docs/background.rst b/docs/background.rst
index 8689067..ec8896a 100644
--- a/docs/background.rst
+++ b/docs/background.rst
@@ -20,10 +20,10 @@ Publications
 -  Osma Suominen and Christian Mader: Assessing and Improving the
    Quality of SKOS Vocabularies. Journal on Data Semantics, vol. 3, no.
    1, pp. 47-73, June, 2014
-   (`PDF <https://seco.cs.aalto.fi/publications/2014/suominen-mader-skosquality.pdf>`_)
+   (`PDF <https://seco.cs.aalto.fi/publications/2014/suominen-mader-skosquality.pdf>`__)
 
 -  Osma Suominen and Eero Hyvönen: Improving the Quality of SKOS
    Vocabularies with Skosify. Proceedings of the 18th International
    Conference on Knowledge Engineering and Knowledge Management (EKAW
    2012), Springer-Verlag, Galway, Ireland, October, 2012
-   (`PDF <https://seco.cs.aalto.fi/publications/2012/suominen-hyvonen-skosify-2012.pdf>`_)
+   (`PDF <https://seco.cs.aalto.fi/publications/2012/suominen-hyvonen-skosify-2012.pdf>`__)
diff --git a/docs/conf.py b/docs/conf.py
index 2e9924a..03d67e2 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,12 +1,43 @@
-# -*- coding: utf-8 -*-
+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+from importlib.metadata import version as pkg_version
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
 
 import os
 import sys
 sys.path.insert(0, os.path.abspath('../'))
 
-needs_sphinx = '1.1'
+# -- Project information -----------------------------------------------------
 
-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.intersphinx', 'sphinx.ext.viewcode']
+# General information about the project.
+project = u'Skosify'
+title = u'Skosify Documentation'
+copyright = u'2017, Osma Suominen & Jakob Voß'
+author = u'Osma Suominen & Jakob Voß'
+# full version, including alpha/beta/rc tags
+release = pkg_version("skosify")
+# Short version
+version = ".".join(release.split(".")[:3])
+
+# -- General configuration ---------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+    'sphinx.ext.autodoc',
+    'sphinx.ext.intersphinx',
+    'sphinx.ext.viewcode',
+]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -20,20 +51,12 @@
 # The master toctree document.
 master_doc = 'index'
 
-# General information about the project.
-project = u'Skosify'
-title = u'Skosify Documentation'
-copyright = u'2017, Osma Suominen & Jakob Voß'
-author = u'Osma Suominen & Jakob Voß'
-version = '2.0.1'  # Use bumpversion to update
-release = version
-
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
@@ -46,6 +69,8 @@
 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = False
 
+# In --nitpick mode, ignore missing references to rdflib types
+nitpick_ignore = [('py:class', 'Graph')]
 
 # -- Options for HTML output ----------------------------------------------
 
@@ -79,7 +104,6 @@
     (master_doc, 'Skosify.tex', title, author, 'manual'),
 ]
 
-
 # -- Options for manual page output ---------------------------------------
 
 # One entry per manual page. List of tuples
@@ -89,4 +113,6 @@
 ]
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/': None}
+intersphinx_mapping = {
+    'python': ('https://docs.python.org/3', None),
+}
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..7426911
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,140 @@
+[build-system]
+requires = ["hatchling>=1.27", "hatch-vcs"]
+build-backend = "hatchling.build"
+
+[project]
+# Storing project metadata in pyproject.toml https://peps.python.org/pep-0621/
+name = "skosify"
+description = "SKOS converter for RDFS/OWL/SKOS vocabularies."
+authors = [
+  {name = "Osma Suominen", email = "osma.suominen@helsinki.fi"},
+]
+license = "MIT"
+license-files = [ "LICENSE" ]
+readme = "README.rst"
+requires-python = ">=3.9"
+
+keywords = ["SKOS", "vocabulary", "RDF"]
+
+classifiers = [
+  "Development Status :: 5 - Production/Stable",
+  "Operating System :: OS Independent",
+  "Programming Language :: Python",
+  "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 :: 3.14",
+]
+
+dependencies = [
+  "rdflib",
+  "tomli>=1.1.0; python_version < '3.11'",
+]
+
+dynamic = ["version"]
+
+[project.urls]
+Homepage = "https://github.com/NatLibFi/Skosify"
+Documentation = "http://skosify.readthedocs.io/"
+Changelog = "https://github.com/NatLibFi/Skosify/blob/master/CHANGELOG.rst"
+
+[project.optional-dependencies]
+tests = [
+  "pytest",
+  "pytest-flake8",
+  "pytest-cov",
+]
+docs = [
+  "sphinx",
+  "sphinx-rtd-theme",
+]
+dev = [
+    # Recursively including the project's own optional dependencies requires pip>=21.2
+    "skosify[tests,docs]",
+    "hatch",
+]
+
+[project.scripts]
+skosify = "skosify.cli:main"
+
+[tool.hatch.metadata]
+# Hatch disallows direct references for dependencies by default.
+# We need to enable them to allow installing NFDI4Cat's vocexcel from github.
+allow-direct-references = true
+
+# Build targets for hatch are defined as sections within tool.hatch.build.targets:
+[tool.hatch.build.targets.sdist]
+include = [
+  "/skosify",
+  "LICENSE",
+  "CHANGELOG.rst",
+]
+
+[tool.hatch.build.targets.wheel]
+packages = ["skosify"]
+
+# integrates git-tag-based versions into hatch, https://github.com/ofek/hatch-vcs
+[tool.hatch.version]
+source = "vcs"
+
+[tool.hatch.build.hooks.vcs]
+version-file = "skosify/_version.py"
+
+[tool.pytest.ini_options]
+# pytest configuration:
+# https://docs.pytest.org/en/stable/customize.html
+
+# Sets directories to be searched for tests.
+testpaths = [
+  "test",
+ ]
+
+# Directories that are not visited by pytest collector:
+norecursedirs = "dist build .tox .git .cache __pycache__ .venv"
+
+# Execute doctests in classes, functions, and test modules (pytest)
+addopts = [
+    "-ra",  # show extra summary info for skipped, failed, etc. tests
+    "-v",   # verbose
+    "--strict-config",   # Raise an error instead of a warning for pytest config issues
+    "--strict-markers",  # Treat typos in function markers as an error
+    "--flake8",          # Run flake8 checks
+    "--cov=skosify",     # Coverage for skosify
+    "--cov-report=xml",  # XML coverage report
+    "--cov-report=term-missing",  # Terminal report with missing lines
+    "--tb=short",        # short traceback format
+    "--durations=10",    # Show 10 slowest tests
+    "--durations-min=1.0",      # Only show tests >1s
+]
+
+[tool.coverage.run]
+# https://coverage.readthedocs.io/en/latest/config.html
+branch = true
+parallel = true
+source_pkgs = ["skosify"]
+omit = [
+    "**/skosify/_version.py",
+]
+
+[tool.coverage.paths]
+# Specify where coverage schould look for source files.
+source = [
+    "skosify",
+]
+
+[tool.coverage.report]
+# Show in report which lines are not covered
+show_missing = false
+# Any line of the source code that matches one of these regexes is excluded
+# from being reported as missing.
+exclude_lines = [
+    # Have to re-enable the standard pragma
+    "pragma: no cover",
+    # Don't complain if tests don't hit defensive assertion code:
+    "raise AssertionError",
+    "raise NotImplementedError",
+    "return NotImplemented",
+    "if __name__ == .__main__.:",
+]
diff --git a/pytest.ini b/pytest.ini
deleted file mode 100644
index 1c9d394..0000000
--- a/pytest.ini
+++ /dev/null
@@ -1,11 +0,0 @@
-# We need to keep this in `pytest.ini` instead of `setup.cfg`
-# because `pep8maxlinelength` is affected by
-# https://github.com/pytest-dev/pytest/issues/567
-
-[pytest]
-addopts =
-    --verbose
-    --flake8
-    --cov=skosify
-    --cov-report xml
-    --cov-report term-missing
diff --git a/setup.cfg b/setup.cfg
index 22bdad9..6deafc2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,17 +1,2 @@
-[bumpversion]
-current_version = 2.3.0
-commit = True
-tag = True
-
-[aliases]
-test = pytest
-
-[bumpversion:file:setup.py]
-
-[bumpversion:file:skosify/__init__.py]
-
-[bdist_wheel]
-universal = 1
-
 [flake8]
 max-line-length = 120
diff --git a/setup.py b/setup.py
deleted file mode 100644
index ceef3ee..0000000
--- a/setup.py
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/usr/bin/env python
-# encoding=utf-8
-from __future__ import print_function
-import os
-import sys
-
-try:
-    from setuptools import setup
-except ImportError:
-    print("This package requires 'setuptools' to be installed.")
-    sys.exit(1)
-
-here = os.path.abspath(os.path.dirname(__file__))
-README = open(os.path.join(here, 'README.rst')).read()
-
-setup(name='skosify',
-      version='2.3.0',  # Use bumpversion to update
-      description='SKOS converter for RDFS/OWL/SKOS vocabularies.',
-      long_description=README,
-      classifiers=[
-          'Programming Language :: Python',
-          'Programming Language :: Python :: 3.6',
-          'Programming Language :: Python :: 3.7',
-          'Programming Language :: Python :: 3.8',
-          'Programming Language :: Python :: 3.9',
-      ],
-      keywords='rdf skos',
-      author='Osma Suominen',
-      author_email='osma.suominen@helsinki.fi',
-      url='https://github.com/NatLibFi/Skosify',
-      license='MIT',
-      install_requires=['rdflib'],
-      setup_requires=['rdflib>=4.2.2', 'pytest-runner>=2.9'],
-      tests_require=['pytest', 'pytest-flake8', 'pytest-cov', 'pytest-catchlog'],
-      packages=['skosify', 'skosify.rdftools'],
-      entry_points={'console_scripts': ['skosify=skosify.cli:main']}
-      )
diff --git a/skosify.py b/skosify.py
deleted file mode 100755
index 4db6a20..0000000
--- a/skosify.py
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env python
-
-"""Wrapper script to directly run skosify from source tree."""
-
-from skosify.cli import main
-
-if __name__ == '__main__':
-    main()
diff --git a/skosify/__init__.py b/skosify/__init__.py
index e2cc314..9f759e6 100644
--- a/skosify/__init__.py
+++ b/skosify/__init__.py
@@ -1,7 +1,16 @@
-# encoding=utf-8
+from importlib.metadata import PackageNotFoundError, version
+
 from .skosify import skosify
 from .config import config
 from . import infer, check
 
-__version__ = '2.3.0'  # Use bumpversion to update
 __all__ = ['skosify', 'config', 'infer', 'check']
+
+try:
+    __version__ = version("skosify")
+except PackageNotFoundError:  # pragma: no cover
+    # package is not installed
+    try:
+        from ._version import version as __version__
+    except ImportError:
+        __version__ = "0.0.0"
\ No newline at end of file
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..9edbd88
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,36 @@
+[tox]
+requires = tox>=4
+env_list = clean, py{39,310,311,312,313,314}, report
+skip_missing_interpreters = true
+
+[testenv]
+# Use coverage run for proper parallel data file handling
+commands = coverage run -m pytest --no-cov
+# pass_env can be removed here and below for tox > 4.32.0 (https://github.com/tox-dev/tox/issues/3639)
+pass_env =
+    LOCALAPPDATA
+deps =
+    pytest
+    pytest-cov
+    pytest-flake8
+    coverage
+depends =
+    py{39,310,311,312,313,314}: clean
+
+[testenv:report]
+pass_env =
+    LOCALAPPDATA
+deps = coverage
+skip_install = true
+depends = py{39,310,311,312,313,314}
+commands =
+    coverage combine
+    coverage report
+    coverage html
+
+[testenv:clean]
+pass_env =
+    LOCALAPPDATA
+deps = coverage
+skip_install = true
+commands = coverage erase