diff --git a/.gitignore b/.gitignore
index b515431..ea23e71 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,10 @@
 *.egg-info/
 *.pyc
+*.swp
 .eggs/
 .idea/
 .tox/
 __pycache__/
 build/
+dist/
 venv/
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 2232104..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,3 +0,0 @@
-recursive-include doc *
-recursive-include tests *.py
-include LICENSE CHANGES.md MANIFEST.in
diff --git a/Makefile b/Makefile
index 0f47306..1fe321d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,27 +1,24 @@
-PYTHON = /usr/bin/python
-SETUP = $(PYTHON) setup.py
-DESTDIR = /
-PREFIX = /usr
-INSTALL_OPTS = --root "$(DESTDIR)" --prefix "$(PREFIX)"
+.PHONY: default install test doctest unittest clean poetry-install tox
 
-.PHONY: default install test doctest unittest clean
+default: poetry-install
+	poetry build
 
-default:
-	$(SETUP) build
-
-install:
-	$(SETUP) install $(INSTALL_OPTS)
+poetry-install:
+	poetry install
 
 test: unittest
 
-doctest:
+doctest: poetry-install
 	make -C doc
 
-unittest:
-	$(PYTHON) -m unittest discover funcparserlib.tests
+unittest: poetry-install
+	poetry run python -m unittest discover
+
+tox:
+	poetry run python -m pip install tox
+	poetry run tox
 
 clean:
-	$(SETUP) clean
-	rm -fr build dist MANIFEST
+	rm -fr build dist *.egg-info .tox
 	find . -name '*.pyc' | xargs rm -f
 	find . -name __pycache__ | xargs rm -fr
diff --git a/doc/Makefile b/doc/Makefile
index bbf09fc..fb36f4c 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -1,7 +1,7 @@
 test: test-tutorial test-brackets
 
 test-tutorial:
-	python -c 'import doctest; doctest.testfile("Tutorial.md")'
+	poetry run python -c 'import doctest; doctest.testfile("Tutorial.md")'
 
 test-brackets:
-	python -c 'import doctest; doctest.testfile("Brackets.md")'
+	poetry run python -c 'import doctest; doctest.testfile("Brackets.md")'
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..8151613
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,17 @@
+[[package]]
+category = "dev"
+description = "Python 2 and 3 compatibility utilities"
+name = "six"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "1.15.0"
+
+[metadata]
+content-hash = "373e8e5f022bb190189f3ea812c638a642bdff584070194aa682b79399031430"
+python-versions = "~2.7 || ^3.5"
+
+[metadata.files]
+six = [
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..d2dfee2
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,32 @@
+[tool.poetry]
+name = "funcparserlib"
+version = "0.3.6"
+description = "Recursive descent parsing library based on functional combinators"
+authors = ["Andrey Vlasovskikh <andrey.vlasovskikh@gmail.com>"]
+license = "MIT"
+readme = "README.md"
+homepage = "https://github.com/vlasovskikh/funcparserlib"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 2",
+    "Programming Language :: Python :: 2.7",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.5",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+]
+
+[tool.poetry.dependencies]
+python = "~2.7 || ^3.5"
+
+[tool.poetry.dev-dependencies]
+six = "^1.15.0"
+
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"
diff --git a/setup.py b/setup.py
deleted file mode 100644
index b46eef3..0000000
--- a/setup.py
+++ /dev/null
@@ -1,32 +0,0 @@
-# -*- coding: utf-8 -*-
-
-from setuptools import setup
-
-
-setup(
-    name='funcparserlib',
-    version='0.3.6',
-    packages=['funcparserlib'],
-    author='Andrey Vlasovskikh',
-    author_email='andrey.vlasovskikh@gmail.com',
-    description='Recursive descent parsing library based on functional '
-        'combinators',
-    license='MIT',
-    url='https://github.com/vlasovskikh/funcparserlib',
-    classifiers=[
-        'Development Status :: 5 - Production/Stable',
-        'Intended Audience :: Developers'
-        'License :: OSI Approved :: MIT License',
-        'Operating System :: OS Independent',
-        'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-    ],
-    python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
-    tests_require=["six"],
-)
diff --git a/tox.ini b/tox.ini
index 3ed8a64..b939fc5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,9 @@
 [tox]
+isolated_build = true
 envlist = py{27,35,36,37,38}
 
 [testenv]
-commands = python setup.py test
+deps =
+    six
+commands =
+    python -m unittest discover