diff --git a/.coveragerc b/.coveragerc
deleted file mode 100644
index 450dee107..000000000
--- a/.coveragerc
+++ /dev/null
@@ -1,6 +0,0 @@
-[run]
-branch = True
-include =
-    invoke/*
-    tests/*
-omit = invoke/vendor/*
diff --git a/.gitignore b/.gitignore
index 4e47c3533..f2cc7ca16 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,7 +5,6 @@ dist/
 .tox
 *.egg-info
 *.py[cod]
-src/
 htmlcov
 coverage.xml
 .cache
diff --git a/MANIFEST.in b/MANIFEST.in
index ba413a3b6..7356532b0 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -4,7 +4,6 @@ include tasks.py
 recursive-include invoke/completion *
 recursive-include sites *
 recursive-exclude sites/*/_build *
-include dev-requirements.txt
 recursive-include tests *
 recursive-exclude * *.pyc *.pyo
 recursive-exclude **/__pycache__ *
diff --git a/dev-requirements.txt b/dev-requirements.txt
deleted file mode 100644
index 7ff385a9a..000000000
--- a/dev-requirements.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-# Install self before invocations to save a bit of time
--e .
-# Invocations, for all sorts of things
-invocations>=3.0.1
-# Coverage!
-coverage>=6.2,<7
-codecov==2.1.12
-# Docs
-releases>=2
-alabaster==0.7.12
-# Testing
-pytest-relaxed>=2
-pytest-cov>=4
-# Formatting
-# Flake8 5.x seems to have an odd importlib-metadata incompatibility?
-flake8>=4,<5
-black>=22.8,<22.9
-# Packaging
-setuptools>56
-# Debuggery
-icecream>=2.1
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 000000000..fa55966b1
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,115 @@
+[build-system]
+requires = ["setuptools>=51.0.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "invoke"
+version = "2.0.0"
+description = "Pythonic task execution"
+# keywords = ["automation", "task runner"]
+authors = [{name="Jeff Forcier", email="jeff@bitprophet.org"}]
+maintainers = [{name="Jeff Forcier", email="jeff@bitprophet.org"}]
+requires-python = ">=3.6.2"
+readme = "README.rst"
+license = {file = "LICENSE"}
+classifiers=[
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Intended Audience :: Developers",
+    "Intended Audience :: System Administrators",
+    "License :: OSI Approved :: BSD License",
+    "Operating System :: POSIX",
+    "Operating System :: Unix",
+    "Operating System :: MacOS :: MacOS X",
+    "Operating System :: Microsoft :: Windows",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Topic :: Software Development",
+    "Topic :: Software Development :: Build Tools",
+    "Topic :: Software Development :: Libraries",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: System :: Software Distribution",
+    "Topic :: System :: Systems Administration",
+]
+
+[project.optional-dependencies]
+dev = [
+    # Invocations, for all sorts of things
+    "invocations>=3.0.1",
+    # Coverage!
+    "coverage[toml]>=6.2,<7",
+    "codecov==2.1.12",
+    # Docs
+    "releases>=2",
+    "alabaster==0.7.12",
+    # Testing
+    "tox>=3.20.1",
+    "pytest>=7",
+    "pytest-relaxed>=2",
+    "pytest-cov>=4",
+    # Linting
+    "pylint>=2.9.5",
+    # Formatting
+    # Flake8 5.x seems to have an odd importlib-metadata incompatibility?
+    "flake8>=4,<5",
+    "isort>=5.10.1",
+    "black>=22.8,<22.9",
+    # Debuggery
+    "icecream>=2.1",
+    # Publish
+    "twine>=1.15",
+]
+
+[project.scripts]
+invoke = "invoke.main:program.run"
+inv = "invoke.main:program.run"
+
+[project.urls]
+homepage = "http://www.pyinvoke.org/"
+changelog = "https://www.pyinvoke.org/changelog.html"
+documentation = "https://docs.pyinvoke.org"
+repository = "https://github.com/pyinvoke/invoke"
+issues = "https://github.com/pyinvoke/invoke/issues"
+ci = "https://app.circleci.com/pipelines/github/pyinvoke/invoke"
+
+[tool.isort]
+profile = "black"
+line_length = 79
+
+[tool.black]
+line-length = 79
+include = '\.pyi?$'
+exclude = '''
+(
+  /(
+    | \.eggs
+    | \.git
+    | \.tox
+    | \.pytest_cache
+    | _build
+    | buck-out
+    | build
+    | dist
+    | vendor
+  )
+)
+'''
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = "*"
+# addopts = "--doctest-modules"
+
+[tool.coverage]
+branch = true
+include = [
+    "src/invoke/*",
+    "tests/*",
+]
+omit = "src/invoke/vendor/*"
diff --git a/pytest.ini b/pytest.ini
deleted file mode 100644
index f51e190a1..000000000
--- a/pytest.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[pytest]
-testpaths = tests
-python_files = *
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 1786a5994..000000000
--- a/setup.py
+++ /dev/null
@@ -1,77 +0,0 @@
-#!/usr/bin/env python
-
-# Support setuptools only, distutils has a divergent and more annoying API and
-# few folks will lack setuptools.
-from setuptools import setup, find_packages
-
-# Version info -- read without importing
-_locals = {}
-with open("invoke/_version.py") as fp:
-    exec(fp.read(), None, _locals)
-version = _locals["__version__"]
-
-exclude = []
-
-# Frankenstein long_description
-long_description = """
-{}
-
-For a high level introduction, including example code, please see `our main
-project website <https://pyinvoke.org>`_; or for detailed API docs, see `the
-versioned API website <https://docs.pyinvoke.org>`_.
-""".format(
-    open("README.rst").read()
-)
-
-
-setup(
-    name="invoke",
-    version=version,
-    description="Pythonic task execution",
-    license="BSD",
-    long_description=long_description,
-    author="Jeff Forcier",
-    author_email="jeff@bitprophet.org",
-    url="https://pyinvoke.org",
-    project_urls={
-        "Docs": "https://docs.pyinvoke.org",
-        "Source": "https://github.com/pyinvoke/invoke",
-        "Issues": "https://github.com/pyinvoke/invoke/issues",
-        "Changelog": "https://www.pyinvoke.org/changelog.html",
-        "CI": "https://app.circleci.com/pipelines/github/pyinvoke/invoke",
-    },
-    python_requires=">=3.6",
-    packages=find_packages(exclude=exclude),
-    include_package_data=True,
-    entry_points={
-        "console_scripts": [
-            "invoke = invoke.main:program.run",
-            "inv = invoke.main:program.run",
-        ]
-    },
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Environment :: Console",
-        "Intended Audience :: Developers",
-        "Intended Audience :: System Administrators",
-        "License :: OSI Approved :: BSD License",
-        "Operating System :: POSIX",
-        "Operating System :: Unix",
-        "Operating System :: MacOS :: MacOS X",
-        "Operating System :: Microsoft :: Windows",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "Topic :: Software Development",
-        "Topic :: Software Development :: Build Tools",
-        "Topic :: Software Development :: Libraries",
-        "Topic :: Software Development :: Libraries :: Python Modules",
-        "Topic :: System :: Software Distribution",
-        "Topic :: System :: Systems Administration",
-    ],
-)
diff --git a/sites/www/development.rst b/sites/www/development.rst
index 55852469c..c28d5bb1b 100644
--- a/sites/www/development.rst
+++ b/sites/www/development.rst
@@ -10,7 +10,7 @@ follow their instructions for cloning (or forking, then cloning, which is best
 if you intend to contribute back) the repository there.
 
 Once downloaded, install the repo itself + its development dependencies by
-running ``pip install -r dev-requirements.txt``.
+running ``pip install -e .[dev]``.
 
 
 Submitting bug reports or patches
diff --git a/invoke/__init__.py b/src/invoke/__init__.py
similarity index 100%
rename from invoke/__init__.py
rename to src/invoke/__init__.py
diff --git a/invoke/__main__.py b/src/invoke/__main__.py
similarity index 100%
rename from invoke/__main__.py
rename to src/invoke/__main__.py
diff --git a/invoke/_version.py b/src/invoke/_version.py
similarity index 100%
rename from invoke/_version.py
rename to src/invoke/_version.py
diff --git a/invoke/collection.py b/src/invoke/collection.py
similarity index 100%
rename from invoke/collection.py
rename to src/invoke/collection.py
diff --git a/invoke/completion/__init__.py b/src/invoke/completion/__init__.py
similarity index 100%
rename from invoke/completion/__init__.py
rename to src/invoke/completion/__init__.py
diff --git a/invoke/completion/bash.completion b/src/invoke/completion/bash.completion
similarity index 100%
rename from invoke/completion/bash.completion
rename to src/invoke/completion/bash.completion
diff --git a/invoke/completion/complete.py b/src/invoke/completion/complete.py
similarity index 100%
rename from invoke/completion/complete.py
rename to src/invoke/completion/complete.py
diff --git a/invoke/completion/fish.completion b/src/invoke/completion/fish.completion
similarity index 100%
rename from invoke/completion/fish.completion
rename to src/invoke/completion/fish.completion
diff --git a/invoke/completion/zsh.completion b/src/invoke/completion/zsh.completion
similarity index 100%
rename from invoke/completion/zsh.completion
rename to src/invoke/completion/zsh.completion
diff --git a/invoke/config.py b/src/invoke/config.py
similarity index 100%
rename from invoke/config.py
rename to src/invoke/config.py
diff --git a/invoke/context.py b/src/invoke/context.py
similarity index 100%
rename from invoke/context.py
rename to src/invoke/context.py
diff --git a/invoke/env.py b/src/invoke/env.py
similarity index 100%
rename from invoke/env.py
rename to src/invoke/env.py
diff --git a/invoke/exceptions.py b/src/invoke/exceptions.py
similarity index 100%
rename from invoke/exceptions.py
rename to src/invoke/exceptions.py
diff --git a/invoke/executor.py b/src/invoke/executor.py
similarity index 100%
rename from invoke/executor.py
rename to src/invoke/executor.py
diff --git a/invoke/loader.py b/src/invoke/loader.py
similarity index 100%
rename from invoke/loader.py
rename to src/invoke/loader.py
diff --git a/invoke/main.py b/src/invoke/main.py
similarity index 100%
rename from invoke/main.py
rename to src/invoke/main.py
diff --git a/invoke/parser/__init__.py b/src/invoke/parser/__init__.py
similarity index 100%
rename from invoke/parser/__init__.py
rename to src/invoke/parser/__init__.py
diff --git a/invoke/parser/argument.py b/src/invoke/parser/argument.py
similarity index 100%
rename from invoke/parser/argument.py
rename to src/invoke/parser/argument.py
diff --git a/invoke/parser/context.py b/src/invoke/parser/context.py
similarity index 100%
rename from invoke/parser/context.py
rename to src/invoke/parser/context.py
diff --git a/invoke/parser/parser.py b/src/invoke/parser/parser.py
similarity index 100%
rename from invoke/parser/parser.py
rename to src/invoke/parser/parser.py
diff --git a/invoke/program.py b/src/invoke/program.py
similarity index 100%
rename from invoke/program.py
rename to src/invoke/program.py
diff --git a/invoke/runners.py b/src/invoke/runners.py
similarity index 100%
rename from invoke/runners.py
rename to src/invoke/runners.py
diff --git a/invoke/tasks.py b/src/invoke/tasks.py
similarity index 100%
rename from invoke/tasks.py
rename to src/invoke/tasks.py
diff --git a/invoke/terminals.py b/src/invoke/terminals.py
similarity index 100%
rename from invoke/terminals.py
rename to src/invoke/terminals.py
diff --git a/invoke/util.py b/src/invoke/util.py
similarity index 100%
rename from invoke/util.py
rename to src/invoke/util.py
diff --git a/invoke/vendor/__init__.py b/src/invoke/vendor/__init__.py
similarity index 100%
rename from invoke/vendor/__init__.py
rename to src/invoke/vendor/__init__.py
diff --git a/invoke/vendor/decorator.py b/src/invoke/vendor/decorator.py
similarity index 100%
rename from invoke/vendor/decorator.py
rename to src/invoke/vendor/decorator.py
diff --git a/invoke/vendor/fluidity/LICENSE b/src/invoke/vendor/fluidity/LICENSE
similarity index 100%
rename from invoke/vendor/fluidity/LICENSE
rename to src/invoke/vendor/fluidity/LICENSE
diff --git a/invoke/vendor/fluidity/__init__.py b/src/invoke/vendor/fluidity/__init__.py
similarity index 100%
rename from invoke/vendor/fluidity/__init__.py
rename to src/invoke/vendor/fluidity/__init__.py
diff --git a/invoke/vendor/fluidity/backwardscompat.py b/src/invoke/vendor/fluidity/backwardscompat.py
similarity index 100%
rename from invoke/vendor/fluidity/backwardscompat.py
rename to src/invoke/vendor/fluidity/backwardscompat.py
diff --git a/invoke/vendor/fluidity/machine.py b/src/invoke/vendor/fluidity/machine.py
similarity index 100%
rename from invoke/vendor/fluidity/machine.py
rename to src/invoke/vendor/fluidity/machine.py
diff --git a/invoke/vendor/lexicon/LICENSE b/src/invoke/vendor/lexicon/LICENSE
similarity index 100%
rename from invoke/vendor/lexicon/LICENSE
rename to src/invoke/vendor/lexicon/LICENSE
diff --git a/invoke/vendor/lexicon/__init__.py b/src/invoke/vendor/lexicon/__init__.py
similarity index 100%
rename from invoke/vendor/lexicon/__init__.py
rename to src/invoke/vendor/lexicon/__init__.py
diff --git a/invoke/vendor/lexicon/_version.py b/src/invoke/vendor/lexicon/_version.py
similarity index 100%
rename from invoke/vendor/lexicon/_version.py
rename to src/invoke/vendor/lexicon/_version.py
diff --git a/invoke/vendor/lexicon/alias_dict.py b/src/invoke/vendor/lexicon/alias_dict.py
similarity index 100%
rename from invoke/vendor/lexicon/alias_dict.py
rename to src/invoke/vendor/lexicon/alias_dict.py
diff --git a/invoke/vendor/lexicon/attribute_dict.py b/src/invoke/vendor/lexicon/attribute_dict.py
similarity index 100%
rename from invoke/vendor/lexicon/attribute_dict.py
rename to src/invoke/vendor/lexicon/attribute_dict.py
diff --git a/invoke/vendor/yaml/__init__.py b/src/invoke/vendor/yaml/__init__.py
similarity index 100%
rename from invoke/vendor/yaml/__init__.py
rename to src/invoke/vendor/yaml/__init__.py
diff --git a/invoke/vendor/yaml/composer.py b/src/invoke/vendor/yaml/composer.py
similarity index 100%
rename from invoke/vendor/yaml/composer.py
rename to src/invoke/vendor/yaml/composer.py
diff --git a/invoke/vendor/yaml/constructor.py b/src/invoke/vendor/yaml/constructor.py
similarity index 100%
rename from invoke/vendor/yaml/constructor.py
rename to src/invoke/vendor/yaml/constructor.py
diff --git a/invoke/vendor/yaml/cyaml.py b/src/invoke/vendor/yaml/cyaml.py
similarity index 100%
rename from invoke/vendor/yaml/cyaml.py
rename to src/invoke/vendor/yaml/cyaml.py
diff --git a/invoke/vendor/yaml/dumper.py b/src/invoke/vendor/yaml/dumper.py
similarity index 100%
rename from invoke/vendor/yaml/dumper.py
rename to src/invoke/vendor/yaml/dumper.py
diff --git a/invoke/vendor/yaml/emitter.py b/src/invoke/vendor/yaml/emitter.py
similarity index 100%
rename from invoke/vendor/yaml/emitter.py
rename to src/invoke/vendor/yaml/emitter.py
diff --git a/invoke/vendor/yaml/error.py b/src/invoke/vendor/yaml/error.py
similarity index 100%
rename from invoke/vendor/yaml/error.py
rename to src/invoke/vendor/yaml/error.py
diff --git a/invoke/vendor/yaml/events.py b/src/invoke/vendor/yaml/events.py
similarity index 100%
rename from invoke/vendor/yaml/events.py
rename to src/invoke/vendor/yaml/events.py
diff --git a/invoke/vendor/yaml/loader.py b/src/invoke/vendor/yaml/loader.py
similarity index 100%
rename from invoke/vendor/yaml/loader.py
rename to src/invoke/vendor/yaml/loader.py
diff --git a/invoke/vendor/yaml/nodes.py b/src/invoke/vendor/yaml/nodes.py
similarity index 100%
rename from invoke/vendor/yaml/nodes.py
rename to src/invoke/vendor/yaml/nodes.py
diff --git a/invoke/vendor/yaml/parser.py b/src/invoke/vendor/yaml/parser.py
similarity index 100%
rename from invoke/vendor/yaml/parser.py
rename to src/invoke/vendor/yaml/parser.py
diff --git a/invoke/vendor/yaml/reader.py b/src/invoke/vendor/yaml/reader.py
similarity index 100%
rename from invoke/vendor/yaml/reader.py
rename to src/invoke/vendor/yaml/reader.py
diff --git a/invoke/vendor/yaml/representer.py b/src/invoke/vendor/yaml/representer.py
similarity index 100%
rename from invoke/vendor/yaml/representer.py
rename to src/invoke/vendor/yaml/representer.py
diff --git a/invoke/vendor/yaml/resolver.py b/src/invoke/vendor/yaml/resolver.py
similarity index 100%
rename from invoke/vendor/yaml/resolver.py
rename to src/invoke/vendor/yaml/resolver.py
diff --git a/invoke/vendor/yaml/scanner.py b/src/invoke/vendor/yaml/scanner.py
similarity index 100%
rename from invoke/vendor/yaml/scanner.py
rename to src/invoke/vendor/yaml/scanner.py
diff --git a/invoke/vendor/yaml/serializer.py b/src/invoke/vendor/yaml/serializer.py
similarity index 100%
rename from invoke/vendor/yaml/serializer.py
rename to src/invoke/vendor/yaml/serializer.py
diff --git a/invoke/vendor/yaml/tokens.py b/src/invoke/vendor/yaml/tokens.py
similarity index 100%
rename from invoke/vendor/yaml/tokens.py
rename to src/invoke/vendor/yaml/tokens.py
diff --git a/invoke/watchers.py b/src/invoke/watchers.py
similarity index 100%
rename from invoke/watchers.py
rename to src/invoke/watchers.py