diff --git a/.gitignore b/.gitignore
index 2a099f4..76a84da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,4 @@
+*~
+*.pyc
+dist/
 rattail_cognitive.egg-info
diff --git a/CHANGES.rst b/CHANGELOG.md
similarity index 58%
rename from CHANGES.rst
rename to CHANGELOG.md
index ffa7858..bf305fd 100644
--- a/CHANGES.rst
+++ b/CHANGELOG.md
@@ -1,59 +1,54 @@
 
-CHANGELOG
-=========
+# Changelog
+All notable changes to rattail_cognitive will be documented in this file.
 
-0.3.6 (2023-06-01)
-------------------
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+
+## 0.3.6 (2023-06-01)
 
 * Replace ``setup.py`` contents with ``setup.cfg``.
 
 
-0.3.5 (2019-01-21)
-------------------
+## 0.3.5 (2019-01-21)
 
 * Remove unused reference to ``cStringIO``.
 
 
-0.3.4 (2017-07-07)
-------------------
+## 0.3.4 (2017-07-07)
 
 * Switch license to GPL v3 (no longer Affero)
 
 
-0.3.3
------
+## 0.3.3
 
 * Refactor some config usage per rattail changes.
 
 
-0.3.2
------
+## 0.3.2
 
 * Fix broken barcode commands.
     
   UPC wasn't working, and EAN wasn't even being attempted...
 
 
-0.3.1
------
+## 0.3.1
 
 * Refactor ``rattail.hw.cognitive`` -> ``rattail_cognitive``.
 
 
-0.3a3
------
+## 0.3a3
 
 - [general] Fixed namespace package declaration.
 
 - [general] Added initial Fabric script.
 
 
-0.3a2
------
+## 0.3a2
 
 - Tweaked default label format.
 
-0.3a1
------
+## 0.3a1
 
 -  Initial port to Rattail v0.3.
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..44140cb
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,44 @@
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+
+[project]
+name = "rattail_cognitive"
+version = "0.3.6"
+description = "Hardware Interfaces for Cognitive Devices"
+readme = "README.txt"
+authors = [{name = "Lance Edgar", email = "lance@edbob.org"}]
+license = {text = "GNU GPL v3+"}
+classifiers = [
+        "Development Status :: 3 - Alpha",
+        "Environment :: Console",
+        "Environment :: Web Environment",
+        "Environment :: Win32 (MS Windows)",
+        "Environment :: X11 Applications",
+        "Intended Audience :: Developers",
+        "Intended Audience :: System Administrators",
+        "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
+        "Natural Language :: English",
+        "Operating System :: OS Independent",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3",
+        "Topic :: Office/Business",
+        "Topic :: Software Development :: Libraries :: Python Modules",
+]
+dependencies = [
+        "rattail",
+]
+
+
+[project.urls]
+Homepage = "https://rattailproject.org"
+Repository = "https://kallithea.rattailproject.org/rattail-project-contrib/rattail-cognitive"
+Changelog = "https://kallithea.rattailproject.org/rattail-project-contrib/rattail-cognitive/files/master/CHANGELOG.md"
+
+
+[tool.commitizen]
+version_provider = "pep621"
+tag_format = "v$version"
+update_changelog_on_bump = true
diff --git a/rattail_cognitive/_version.py b/rattail_cognitive/_version.py
index b3c1f94..3336373 100644
--- a/rattail_cognitive/_version.py
+++ b/rattail_cognitive/_version.py
@@ -1,3 +1,6 @@
 # -*- coding: utf-8; -*-
 
-__version__ = '0.3.6'
+from importlib.metadata import version
+
+
+__version__ = version('rattail_cognitive')
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index f6b62d3..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,36 +0,0 @@
-# -*- coding: utf-8; -*-
-
-[metadata]
-name = rattail_cognitive
-version = attr: rattail_cognitive.__version__
-author = Lance Edgar
-author_email = lance@edbob.org
-url = http://rattailproject.org/
-license = GNU GPL v3
-description = Hardware Interfaces for Cognitive Devices
-long_description = file: README.txt
-classifiers =
-        Development Status :: 3 - Alpha
-        Environment :: Console
-        Environment :: Web Environment
-        Environment :: Win32 (MS Windows)
-        Environment :: X11 Applications
-        Intended Audience :: Developers
-        Intended Audience :: System Administrators
-        License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
-        Natural Language :: English
-        Operating System :: OS Independent
-        Programming Language :: Python
-        Programming Language :: Python :: 2.6
-        Programming Language :: Python :: 2.7
-        Topic :: Office/Business
-        Topic :: Software Development :: Libraries :: Python Modules
-
-
-[options]
-install_requires =
-        rattail>=0.3a6
-
-packages = find:
-include_package_data = True
-zip_safe = False
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 9588a53..0000000
--- a/setup.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# -*- coding: utf-8; -*-
-################################################################################
-#
-#  Rattail -- Retail Software Framework
-#  Copyright © 2010-2023 Lance Edgar
-#
-#  This file is part of Rattail.
-#
-#  Rattail is free software: you can redistribute it and/or modify it under the
-#  terms of the GNU General Public License as published by the Free Software
-#  Foundation, either version 3 of the License, or (at your option) any later
-#  version.
-#
-#  Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
-#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
-#  details.
-#
-#  You should have received a copy of the GNU General Public License along with
-#  Rattail.  If not, see <http://www.gnu.org/licenses/>.
-#
-################################################################################
-
-
-from setuptools import setup
-
-setup()