diff --git a/.gitignore b/.gitignore
index ca15349..d9acc99 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,3 @@ __pycache__
 build/
 dist/
 pip-wheel-metadata/
-documentation/build/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 031ee90..8ae6a9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,31 +1,23 @@
-# hypercore-crypto 0.0.1a4 (UNRELEASED)
+# hypercore-crypto 0.0.1a5 (UNRELEASED)
 
-## Removals
+# hypercore-crypto 0.0.1a4 (2020-07-07)
 
+- Migration configurations to pyproject
+- Follow the Hypercore protocol renaming situation.
+- Migrate CI to drone.autonomic.zone
+- Migrate to git.autonomic.zone
+- Reduce package boilerplate
 - Removed RTD documentation
 
-## Trivial/Internal Changes
-
-- Follow the Hypercore protocol renaming situation.
-- Migrate to git.autonomic.zone
-- Migrate CI to drone.autonomic.zone
-- Reduce package boilerplate
-
 # hypercore-crypto 0.0.1a3 (2019-11-14)
 
-## Bug Fixes
-
 - Use the correct keyword argument when invoking `crypto_generichash`.
 
 # hypercore-crypto 0.0.1a2 (2019-11-03)
 
-## Improved Documentation
-
-- New Sphinx theme.
 - Add a changelog.
+- New Sphinx theme.
 
 # hypercore-crypto 0.0.1a1 (2019-10-05)
 
-## Project Announcements
-
 - The first alpha development release is made!
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index ae15510..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1 +0,0 @@
-include LICENSE README.md CHANGELOG.md
diff --git a/README.md b/README.md
index ff46cfc..4d2e4ec 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,19 @@
 
 ## Cryptography primitives for Hypercore
 
+## Install
+
 ```sh
 $ pip install hypercore-crypto
 ```
+
+## Example
+
+```python
+from hypercore_crypto import data, key_pair
+from pysodium import crypto_sign_PUBLICKEYBYTES
+
+public_key, secret_key = key_pair()
+assert len(public_key) == crypto_sign_PUBLICKEYBYTES
+print(data(b"hello world").hex())
+```
diff --git a/hypercore_crypto/__init__.py b/hypercore_crypto/__init__.py
index 9bb1ea5..4d614ca 100644
--- a/hypercore_crypto/__init__.py
+++ b/hypercore_crypto/__init__.py
@@ -1,9 +1,9 @@
 """hypercore-crypto module."""
 
-from hypercore_crypto.crypto import (  # noqa
+from hypercore_crypto.crypto import (
     data,
     discovery_key,
-    key_pair,
+    key_pair,  # noqa
     leaf,
     parent,
     random_bytes,
@@ -11,14 +11,3 @@ from hypercore_crypto.crypto import (  # noqa
     tree,
     verify,
 )
-
-try:
-    import pkg_resources
-except ImportError:
-    pass
-
-
-try:
-    __version__ = pkg_resources.get_distribution("hypercore_crypto").version
-except Exception:
-    __version__ = "unknown"
diff --git a/mypy.ini b/mypy.ini
deleted file mode 100644
index ab4ef1a..0000000
--- a/mypy.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[mypy]
-python_version = 3.8
-platform = linux
-ignore_missing_imports = True
diff --git a/pyproject.toml b/pyproject.toml
index 50cb059..1451be9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,11 +1,77 @@
 [build-system]
-requires = [
-  "setuptools",
-  "setuptools-scm",
-  "wheel",
-]
-build-backend = "setuptools.build_meta"
+requires = ["poetry>=1.0.9,<2.0"]
+build-backend = "poetry.masonry.api"
+
+[tool.poetry]
+name = "hypercore-crypto"
+version = "0.0.1a4"
+description = "Cryptography primitives for Hypercore"
+authors = ["Decentral1se <hi@decentral1.se>"]
+maintainers = ["Decentral1se <hi@decentral1.se>"]
+license = "GPLv3"
+readme = "README.md"
+repository = "https://github.com/hyperpy/hypercore-crypto"
+keywords = ["hypercore", "hypercore-protocol"]
+
+[tool.poetry.dependencies]
+python = "^3.6"
+pysodium = "^0.7.5"
+merkle-tree-stream = "^0.0.1-alpha.4"
+
+[tool.poetry.dev-dependencies]
+black = "^19.10b0"
+flake8 = "^3.8.3"
+isort = "^5.0.2"
 
 [tool.black]
 line-length = 80
 target-version = ["py38"]
+include = '\.pyi?$'
+
+[tool.isort]
+include_trailing_comma = true
+known_first_party = "hypercore_crypto"
+known_third_party = "pytest"
+line_length = 80
+multi_line_output = 3
+skip = ".venv,.tox"
+
+[tool.tox]
+legacy_tox_ini = """
+[tox]
+envlist =
+    {py36,py37,py38}
+    lint
+    sort
+    format
+    type
+skip_missing_interpreters = True
+isolated_build = True
+
+[testenv]
+deps =
+  pytest
+  pytest-cov
+  pytest-mock
+commands = pytest test/ --cov={toxinidir}/hypercore_crypto/ --no-cov-on-fail {posargs}
+
+[testenv:lint]
+skipdist = True
+deps = flake8
+commands = flake8 {posargs:--max-line-length 80} hypercore_crypto/ test/
+
+[testenv:sort]
+skipdist = True
+deps = isort
+commands = isort {posargs:-c} -sp setup.cfg hypercore_crypto/ test/
+
+[testenv:format]
+skipdist = True
+deps = black
+commands = black {posargs:--check} hypercore_crypto/ test/
+
+[testenv:type]
+skipdist = True
+deps = mypy
+commands = mypy {posargs:--ignore-missing-imports} hypercore_crypto/ test/
+"""
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 09c1762..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,49 +0,0 @@
-[tool:pytest]
-testpaths = test
-
-[flake8]
-max-line-length = 80
-
-[isort]
-known_first_party = hypercore-crypto
-known_third_party = pytest
-line_length = 80
-multi_line_output = 3
-skip = .venv, .tox
-include_trailing_comma = True
-
-[metadata]
-name = hypercore-crypto
-author = decentral1se
-author_email = hi@decentral1.se
-maintainer = decentral1se
-maintainer_email = hi@decentral1.se
-url = https://git.autonomic.zone/hyperpy/hypercore-crypto
-project_urls =
-  Source Code = https://git.autonomic.zone/hyperpy/hypercore-crypto
-description = Cryptography primitives for Hypercore
-long_description = file: README.md
-license = GPLv3
-license_file = LICENSE
-classifiers =
-  Programming Language :: Python :: 3
-  Programming Language :: Python :: 3.6
-  Programming Language :: Python :: 3.7
-  Programming Language :: Python :: 3.8
-
-[options]
-use_scm_version = True
-python_requires = >=3.6
-setup_requires =
-  setuptools_scm
-  setuptools_scm_git_archive
-package_dir =
-  = .
-packages = find:
-zip_safe = False
-install_requires =
-  pysodium >= 0.7.2, < 0.8
-  merkle-tree-stream >= 0.0.1a1, < 1.0.0
-
-[options.packages.find]
-where = .
diff --git a/setup.py b/setup.py
deleted file mode 100644
index d5d43d7..0000000
--- a/setup.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from setuptools import setup
-
-setup(use_scm_version=True)
diff --git a/test/test_version.py b/test/test_version.py
deleted file mode 100644
index f805507..0000000
--- a/test/test_version.py
+++ /dev/null
@@ -1,10 +0,0 @@
-"""Version test module."""
-
-
-def test_version_fails_gracefully(mocker):
-    target = "pkg_resources.get_distribution"
-    mocker.patch(target, side_effect=Exception())
-
-    from hypercore_crypto.__init__ import __version__
-
-    assert __version__ == "unknown"
diff --git a/tox.ini b/tox.ini
deleted file mode 100644
index fb03c81..0000000
--- a/tox.ini
+++ /dev/null
@@ -1,49 +0,0 @@
-[tox]
-envlist =
-    {py36,py37,py38}
-    lint
-    sort
-    format
-    type
-    docs
-skip_missing_interpreters = True
-isolated_build = True
-
-[testenv]
-deps =
-  pytest
-  pytest-cov
-  pytest-mock
-commands =
-  pytest test/ --cov={toxinidir}/hypercore_crypto/ --no-cov-on-fail {posargs}
-
-[testenv:lint]
-skipdist = True
-deps = flake8
-commands = flake8 {posargs} hypercore_crypto/ test/
-
-[testenv:sort]
-skipdist = True
-deps = isort
-commands = isort {posargs:-rc -c} -sp setup.cfg hypercore_crypto/ test/
-
-[testenv:format]
-skipdist = True
-deps = black
-commands = black {posargs:--check} hypercore_crypto/ test/
-
-[testenv:type]
-skipdist = True
-deps = mypy
-commands = mypy hypercore_crypto/ test/
-
-[testenv:release]
-description = make a release
-deps = twine
-commands =
-    rm -rf {toxworkdir}/dist
-    python -m setup sdist --dist-dir {toxworkdir}/dist bdist_wheel
-    python -m setup sdist --dist-dir {toxworkdir}/dist bdist_egg
-    twine upload {toxworkdir}/dist/*
-whitelist_externals =
-    rm