diff --git a/.bumpversion.cfg b/.bumpversion.cfg
deleted file mode 100644
index febc41fb..00000000
--- a/.bumpversion.cfg
+++ /dev/null
@@ -1,20 +0,0 @@
-[bumpversion]
-current_version = 4.3.1.dev
-parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\.(?P<release>[a-z0-9]+))?
-tag_name = {new_version}
-allow_dirty = True
-commit = True
-tag = False
-serialize = 
-	{major}.{minor}.{patch}.{release}
-	{major}.{minor}.{patch}
-
-[bumpversion:file:kubespawner/__init__.py]
-
-[bumpversion:file:setup.py]
-
-[bumpversion:part:release]
-optional_value = stable
-values = 
-	dev
-	stable
diff --git a/.flake8 b/.flake8
index 7b64faeb..05de5fa5 100644
--- a/.flake8
+++ b/.flake8
@@ -9,4 +9,5 @@ builtins = c, get_config
 exclude =
     .cache,
     .github,
-    docs
+    docs,
+    __init__.py
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 3d2c840a..127a694c 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -1,31 +1,19 @@
 # Configuration on how ReadTheDocs (RTD) builds our documentation
 # ref: https://readthedocs.org/projects/jupyterhub-kubespawner/
 # ref: https://docs.readthedocs.io/en/stable/config-file/v2.html
-
-# Required (RTD configuration version)
+#
 version: 2
 
-build:
-  os: ubuntu-20.04
-  tools:
-    python: "3.8"
-
 sphinx:
   configuration: docs/source/conf.py
 
-# Optionally build docs in additional formats such as PDF and ePub
-formats: []
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.10"
 
-# Optionally set requirements required to build your docs
 python:
   install:
-    # WARNING: This requirements file will be installed without the pip
-    #          --upgrade flag in an existing environment. This means that if a
-    #          package is specified without a lower boundary, we may end up
-    #          accepting the existing version.
-    #
-    #          ref: https://github.com/readthedocs/readthedocs.org/blob/0e3df509e7810e46603be47d268273c596e68455/readthedocs/doc_builder/python_environments.py#L335-L344
-    #
     - requirements: docs/requirements.txt
     # NOTE:    We also install the kubespawner package itself, because we use
     #          the autodoc_traits sphinx extension to generate documentation via
diff --git a/RELEASE.md b/RELEASE.md
index 75e39ee3..28c6a214 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,64 +1,50 @@
-# How to make a release
+\*\*# How to make a release
 
-`jupyterhub-kubespawner` is a package [available on
-PyPI](https://pypi.org/project/jupyterhub-kubespawner/). These are instructions
-on how to make a release on PyPI.
+`jupyterhub-kubespawner` is a package available on [PyPI][] and [conda-forge][].
+These are instructions on how to make a release.
 
-For you to follow along according to these instructions, you need:
+## Pre-requisites
 
-- To have push rights to the [kubespawner GitHub
-  repository](https://github.com/jupyterhub/kubespawner).
+- Push rights to [github.com/jupyterhub/kubespawner][]
+- Push rights to [conda-forge/jupyterhub-kubespawner-feedstock][]
 
 ## Steps to make a release
 
-1. Update [CHANGELOG.md](CHANGELOG.md). Doing this can be made easier with the
-   help of the
-   [choldgraf/github-activity](https://github.com/choldgraf/github-activity)
-   utility to list merged PRs and generate a list of contributors.
+1. Create a PR updating `docs/source/changelog.md` with [github-activity][] and
+   continue only when its merged.
 
-   ```bash
-   github-activity jupyterhub/kubespawner --output tmp-changelog-prep.md
-   ```
-
-1. Once the changelog is up to date, checkout main and make sure it is up to date and clean.
+1. Checkout main and make sure it is up to date.
 
-   ```bash
-   ORIGIN=${ORIGIN:-origin} # set to the canonical remote, e.g. 'upstream' if 'origin' is not the official repo
+   ```shell
    git checkout main
-   git fetch $ORIGIN main
-   git reset --hard $ORIGIN/main
-   # WARNING! This next command deletes any untracked files in the repo
-   git clean -xfd
+   git fetch origin main
+   git reset --hard origin/main
    ```
 
-1. Update version and tag, and return to a dev version, with `bump2version`.
+1. Update the version, make commits, and push a git tag with `tbump`.
 
-   ```bash
-   VERSION=...  # e.g. 1.2.3
-   bump2version --tag --new-version $VERSION -
-   bump2version --no-tag patch
+   ```shell
+   pip install tbump
+   tbump --dry-run ${VERSION}
 
-   # verify tags, commits, and version tagged
-   git log
+   # run
+   tbump ${VERSION}
    ```
 
-1. Push your two commits to main along with the annotated tags referencing
-   commits on main. A GitHub workflow will trigger on the pushed git tag and
-   publish to PyPI.
+   Following this, the [CI system][] will build and publish a release.
 
-   ```bash
-   # pushing the commits standalone allows you to
-   # ensure you don't end up only pushing the tag
-   # because the commit were rejected but the tag
-   # wasn't
-   git push $ORIGIN main
+1. Reset the version back to dev, e.g. `2.0.1.dev0` after releasing `2.0.0`.
 
-   # if you could push the commits without issues
-   # go ahead and push the tag also
-   git push --follow-tags $ORIGIN main
+   ```shell
+   tbump --no-tag ${NEXT_VERSION}.dev0
    ```
 
-1. Verify that [the GitHub
-   workflow](https://github.com/jupyterhub/kubespawner/actions?query=workflow%3APublish)
-   triggers and succeeds and that that PyPI received a [new
-   release](https://pypi.org/project/jupyterhub-kubespawner/).
+1. Following the release to PyPI, an automated PR should arrive to
+   [conda-forge/jupyterhub-kubespawner-feedstock][] with instructions.
+
+[github-activity]: https://github.com/executablebooks/github-activity
+[github.com/jupyterhub/kubespawner]: https://github.com/jupyterhub/kubespawner
+[pypi]: https://pypi.org/project/jupyterhub-kubespawner/
+[conda-forge]: https://anaconda.org/conda-forge/jupyterhub-kubespawner
+[conda-forge/jupyterhub-kubespawner-feedstock]: https://github.com/conda-forge/jupyterhub-kubespawner-feedstock
+[ci system]: https://github.com/jupyterhub/kubespawner/actions/workflows/publish.yaml
diff --git a/kubespawner/__init__.py b/kubespawner/__init__.py
index 13c59e65..ec65df34 100644
--- a/kubespawner/__init__.py
+++ b/kubespawner/__init__.py
@@ -10,7 +10,5 @@
 # We export KubeSpawner specifically here. This simplifies import for users.
 # Users can simply import kubespawner.KubeSpawner in their applications
 # instead of the more verbose import kubespawner.spawner.KubeSpawner.
+from ._version import __version__
 from .spawner import KubeSpawner
-
-__version__ = '4.3.1.dev'
-__all__ = ["KubeSpawner"]
diff --git a/kubespawner/_version.py b/kubespawner/_version.py
new file mode 100644
index 00000000..e3166eff
--- /dev/null
+++ b/kubespawner/_version.py
@@ -0,0 +1,4 @@
+# __version__ should be updated using tbump, based on configuration in
+# pyproject.toml, according to instructions in RELEASE.md.
+#
+__version__ = "4.3.1.dev0"
diff --git a/pyproject.toml b/pyproject.toml
index 87b5475d..62f2c28e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,56 @@
+# build-system
+# - ref: https://peps.python.org/pep-0517/
+#
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+
+# project
+# - ref 1: https://peps.python.org/pep-0621/
+# - ref 2: https://hatch.pypa.io/latest/config/metadata/#project-metadata
+#
+[project]
+name = "jupyterhub-kubespawner"
+description = "JupyterHub Spawner for Kubernetes"
+readme = "README.md"
+requires-python = ">=3.7"
+license = {file = "LICENSE"}
+keywords = ["jupyterhub", "spawner"]
+authors = [
+    {name = "Jupyter Contributors", email = "jupyter@googlegroups.com"},
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Programming Language :: Python :: 3",
+]
+dependencies = [
+    # NOTE: If lower bounds are updated, also update our test for the lower
+    #       bounds in .github/workflows/test.yaml.
+    "escapism",
+    "jinja2",
+    "jupyterhub>=1.3.0",
+    "kubernetes_asyncio>=19.15.1",
+    "python-slugify",
+    "pyYAML",
+    "urllib3",
+]
+dynamic = ["version"]
+
+[project.optional-dependencies]
+test = [
+    "kubernetes>=11",
+    "pytest>=5.4",
+    "pytest-cov",
+    "pytest-asyncio>=0.17",
+]
+
+[project.urls]
+Documentation = "https://jupyterhub-kubespawner.readthedocs.io"
+Source = "https://github.com/jupyterhub/kubespawner"
+Issues = "https://github.com/jupyterhub/kubespawner/issues"
+
+
 # black is used for autoformatting Python code
 #
 # ref: https://black.readthedocs.io/en/stable/
@@ -15,6 +68,12 @@ target_version = [
 ]
 
 
+# hatch ref: https://hatch.pypa.io/latest/
+#
+[tool.hatch.version]
+path = "kubespawner/_version.py"
+
+
 # isort is used for autoformatting Python code
 #
 # ref: https://pycqa.github.io/isort/
@@ -32,3 +91,32 @@ addopts = "--verbose --color=yes --durations=10"
 asyncio_mode = "auto"
 # Ignore thousands of tests in dependencies installed in a virtual environment
 norecursedirs = "lib lib64"
+
+
+# tbump is used to simplify and standardize the release process when updating
+# the version, making a git commit and tag, and pushing changes.
+#
+# ref: https://github.com/your-tools/tbump#readme
+#
+[tool.tbump]
+github_url = "https://github.com/jupyterhub/kubespawner"
+
+[tool.tbump.version]
+current = "4.3.1.dev0"
+regex = '''
+    (?P<major>\d+)
+    \.
+    (?P<minor>\d+)
+    \.
+    (?P<patch>\d+)
+    (?P<pre>((a|b|rc)\d+)|)
+    \.?
+    (?P<dev>(?<=\.)dev\d*|)
+'''
+
+[tool.tbump.git]
+message_template = "Bump to {new_version}"
+tag_template = "{new_version}"
+
+[[tool.tbump.file]]
+src = "kubespawner/_version.py"
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 1f91af4a..00000000
--- a/setup.py
+++ /dev/null
@@ -1,48 +0,0 @@
-import sys
-
-from setuptools import find_packages, setup
-
-v = sys.version_info
-if v[:2] < (3, 7):
-    error = "ERROR: kubespawner requires Python version 3.7 or above."
-    print(error, file=sys.stderr)
-    sys.exit(1)
-
-setup(
-    name='jupyterhub-kubespawner',
-    version='4.3.1.dev',
-    # NOTE: If lower bounds are updated, also update our test for the lower
-    #       bounds in .github/workflows/test.yaml.
-    install_requires=[
-        'escapism',
-        'python-slugify',
-        'jupyterhub>=1.3.0',
-        'jinja2',
-        'kubernetes_asyncio>=19.15.1',
-        'urllib3',
-        'pyYAML',
-    ],
-    python_requires='>=3.7',
-    extras_require={
-        'test': [
-            'bump2version',
-            'kubernetes>=11',
-            'pytest>=5.4',
-            'pytest-cov',
-            'pytest-asyncio>=0.17',
-        ]
-    },
-    description='JupyterHub Spawner for Kubernetes',
-    url='http://github.com/jupyterhub/kubespawner',
-    author='Jupyter Contributors',
-    author_email='jupyter@googlegroups.com',
-    long_description=open("README.md").read(),
-    long_description_content_type="text/markdown",
-    license='BSD',
-    packages=find_packages(),
-    project_urls={
-        'Documentation': 'https://jupyterhub-kubespawner.readthedocs.io',
-        'Source': 'https://github.com/jupyterhub/kubespawner',
-        'Tracker': 'https://github.com/jupyterhub/kubespawner/issues',
-    },
-)