diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..35e5fb73
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,30 @@
+name: release
+
+on:
+  workflow_dispatch: # run manually
+  push: # run on matching tags
+    tags:
+      - '*.*.*'
+
+jobs:
+  release-to-pypi:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/cache@v3
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt') }}
+          restore-keys: ${{ runner.os }}-pip-
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+      - name: Install dependencies
+        run: |
+          pip install -U pip setuptools wheel
+          pip install -U tox
+      - name: Publish package to PyPI
+        env:
+          FLIT_USERNAME: __token__
+          FLIT_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
+        run: tox -e publish
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 9abe9773..00000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,4 +0,0 @@
-include LICENSE CHANGELOG.rst README.rst Makefile tox.ini
-recursive-include requirements *.txt
-recursive-include tests *.py
-recursive-include docs *.py *.rst *.bat Makefile
diff --git a/Makefile b/Makefile
index 27d5cbe4..9db6fba0 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@ test:
 
 lint:
 	. venv/bin/activate; \
-	pre-commit run --all-files
+	pre-commit run --all-files --show-diff-on-failure
 
 clean-docs:
 	rm -rf docs/_build
@@ -42,15 +42,9 @@ clean: clean-dist
 	rm -f .coverage coverage.xml ./**/*.pyc
 
 clean-dist:
-	rm -rf dist build .egg .eggs arrow.egg-info
+	rm -rf dist build *.egg *.eggs *.egg-info
 
-build-dist:
+build-dist: clean-dist
 	. venv/bin/activate; \
-	pip install -U pip setuptools twine wheel; \
-	python setup.py sdist bdist_wheel
-
-upload-dist:
-	. venv/bin/activate; \
-	twine upload dist/*
-
-publish: test clean-dist build-dist upload-dist clean-dist
+	pip install -U flit; \
+	flit build
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..5ccc497a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,66 @@
+[build-system]
+requires = ["flit_core >=3.2,<4"]
+build-backend = "flit_core.buildapi"
+
+[project]
+name = "arrow"
+authors = [{name = "Chris Smith", email = "crsmithdev@gmail.com"}]
+readme = "README.rst"
+license = {file = "LICENSE"}
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Information Technology",
+    "License :: OSI Approved :: Apache Software License",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Operating System :: OS Independent",
+]
+dependencies = [
+    "python-dateutil>=2.7.0",
+    "types-python-dateutil>=2.8.10",
+]
+requires-python = ">=3.8"
+description = "Better dates & times for Python"
+keywords = [
+    "arrow",
+    "date",
+    "time",
+    "datetime",
+    "timestamp",
+    "timezone",
+    "humanize",
+]
+dynamic = ["version"]
+
+[project.optional-dependencies]
+test = [
+    "dateparser==1.*",
+    "pre-commit",
+    "pytest",
+    "pytest-cov",
+    "pytest-mock",
+    "pytz==2021.1",
+    "simplejson==3.*",
+]
+doc = [
+    "doc8",
+    "sphinx>=7.0.0",
+    "sphinx-autobuild",
+    "sphinx-autodoc-typehints",
+    "sphinx_rtd_theme>=1.3.0",
+]
+
+[project.urls]
+Documentation = "https://arrow.readthedocs.io"
+Source = "https://github.com/arrow-py/arrow"
+Issues = "https://github.com/arrow-py/arrow/issues"
+
+[tool.flit.module]
+name = "arrow"
diff --git a/requirements/requirements-tests.txt b/requirements/requirements-tests.txt
index 7e9fbe3f..77005e0b 100644
--- a/requirements/requirements-tests.txt
+++ b/requirements/requirements-tests.txt
@@ -4,7 +4,5 @@ pre-commit
 pytest
 pytest-cov
 pytest-mock
-python-dateutil>=2.7.0
 pytz==2021.1
 simplejson==3.*
-typing_extensions; python_version < '3.8'
diff --git a/setup.py b/setup.py
deleted file mode 100644
index d58b9f3b..00000000
--- a/setup.py
+++ /dev/null
@@ -1,48 +0,0 @@
-# mypy: ignore-errors
-from pathlib import Path
-
-from setuptools import setup
-
-readme = Path("README.rst").read_text(encoding="utf-8")
-version = Path("arrow/_version.py").read_text(encoding="utf-8")
-about = {}
-exec(version, about)
-
-setup(
-    name="arrow",
-    version=about["__version__"],
-    description="Better dates & times for Python",
-    long_description=readme,
-    long_description_content_type="text/x-rst",
-    url="https://arrow.readthedocs.io",
-    author="Chris Smith",
-    author_email="crsmithdev@gmail.com",
-    license="Apache 2.0",
-    packages=["arrow"],
-    package_data={"arrow": ["py.typed"]},
-    zip_safe=False,
-    python_requires=">=3.8",
-    install_requires=[
-        "python-dateutil>=2.7.0",
-        "types-python-dateutil>=2.8.10",
-    ],
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: Apache Software License",
-        "Topic :: Software Development :: Libraries :: Python Modules",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "Programming Language :: Python :: 3.12",
-    ],
-    keywords="arrow date time datetime timestamp timezone humanize",
-    project_urls={
-        "Repository": "https://github.com/arrow-py/arrow",
-        "Bug Reports": "https://github.com/arrow-py/arrow/issues",
-        "Documentation": "https://arrow.readthedocs.io",
-    },
-)
diff --git a/tox.ini b/tox.ini
index 03c4d2af..c410a8e5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -36,6 +36,15 @@ commands =
     doc8 index.rst ../README.rst --extension .rst --ignore D001
     make html SPHINXOPTS="-W --keep-going"
 
+[testenv:publish]
+passenv = *
+skip_install = true
+deps =
+    -r requirements/requirements.txt
+    flit
+allowlist_externals = flit
+commands = flit publish --setup-py
+
 [pytest]
 addopts = -v --cov-branch --cov=arrow --cov-fail-under=99 --cov-report=term-missing --cov-report=xml
 testpaths = tests