diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 5a9d0d57..32c48f25 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -15,11 +15,13 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
+    - name: Install and configure Poetry
+      uses: snok/install-poetry@v1
+      with:
+        version: latest
+        virtualenvs-create: false
     - name: Install dependencies
-      run: |
-        pip install -r ./requirements/base.txt
-        pip install -r ./requirements/test.txt
-        pip install -r ./requirements/ci.txt
+      run: poetry install
     - name: Test with pytest
       run: |
         pytest -rfs --cov --cov-config=.coveragerc --cov-report="" --disable-warnings
diff --git a/.github/workflows/upload-package.yml b/.github/workflows/upload-package.yml
index 61ce0108..add9735b 100644
--- a/.github/workflows/upload-package.yml
+++ b/.github/workflows/upload-package.yml
@@ -14,11 +14,7 @@ jobs:
       - uses: actions/setup-python@v1
         with:
           python-version: '3.6'
-      - name: Install dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Build a package
-        run: python setup.py sdist
-      - name: Install dependencies
-        run: pip install twine
-      - name: Publish to private PyPI
-        run: python -m twine upload dist/* -u __token__ -p ${{ secrets.pypi_token }}
+      - name: Build and publish to PyPi
+        uses: JRubics/poetry-publish@v1.8
+        with:
+          pypi_token: ${{ secrets.PYPI_TOKEN }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e0b8be8..c71303f6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [9.4.1] - 2021-09-16
+
+Change build system to poetry
+
 ## [9.4.0] - 2021-06-28
 
 Update sqlalchemy to 1.4.0+
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 00000000..4a67c0f2
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,1398 @@
+[[package]]
+name = "add-trailing-comma"
+version = "1.3.0"
+description = "Automatically add trailing commas to calls and literals"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+tokenize-rt = ">=3.0.1"
+
+[[package]]
+name = "aspy.yaml"
+version = "1.3.0"
+description = "A few extensions to pyyaml."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+pyyaml = "*"
+
+[[package]]
+name = "atomicwrites"
+version = "1.4.0"
+description = "Atomic file writes."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "attrs"
+version = "21.2.0"
+description = "Classes Without Boilerplate"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.extras]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit"]
+docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins"]
+
+[[package]]
+name = "backports.entry-points-selectable"
+version = "1.1.0"
+description = "Compatibility shim providing selectable entry points for older implementations"
+category = "dev"
+optional = false
+python-versions = ">=2.7"
+
+[package.dependencies]
+importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-flake8", "pytest-cov", "pytest-black (>=0.3.7)", "pytest-mypy", "pytest-checkdocs (>=2.4)", "pytest-enabler (>=1.0.1)"]
+
+[[package]]
+name = "certifi"
+version = "2021.5.30"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "cfgv"
+version = "3.0.0"
+description = "Validate configuration and produce human readable error messages."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[[package]]
+name = "charset-normalizer"
+version = "2.0.5"
+description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
+category = "main"
+optional = false
+python-versions = ">=3.5.0"
+
+[package.extras]
+unicode_backport = ["unicodedata2"]
+
+[[package]]
+name = "codecov"
+version = "2.1.12"
+description = "Hosted coverage reports for GitHub, Bitbucket and Gitlab"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+coverage = "*"
+requests = ">=2.7.9"
+
+[[package]]
+name = "colorama"
+version = "0.4.4"
+description = "Cross-platform colored terminal text."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "coreapi"
+version = "2.3.3"
+description = "Python client library for Core API."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+coreschema = "*"
+itypes = "*"
+requests = "*"
+uritemplate = "*"
+
+[[package]]
+name = "coreschema"
+version = "0.0.4"
+description = "Core Schema."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+jinja2 = "*"
+
+[[package]]
+name = "coverage"
+version = "5.5"
+description = "Code coverage measurement for Python"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+
+[package.extras]
+toml = ["toml"]
+
+[[package]]
+name = "dataclasses"
+version = "0.6"
+description = "A backport of the dataclasses module for Python 3.6"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "distlib"
+version = "0.3.2"
+description = "Distribution utilities"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "django"
+version = "2.2.24"
+description = "A high-level Python Web framework that encourages rapid development and clean, pragmatic design."
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+pytz = "*"
+sqlparse = ">=0.2.2"
+
+[package.extras]
+argon2 = ["argon2-cffi (>=16.1.0)"]
+bcrypt = ["bcrypt"]
+
+[[package]]
+name = "djangorestframework"
+version = "3.12.4"
+description = "Web APIs for Django, made easy."
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+django = ">=2.2"
+
+[[package]]
+name = "docstring-parser"
+version = "0.10"
+description = "\"Parse Python docstrings in reST, Google and Numpydoc format\""
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
+name = "drf-yasg"
+version = "1.20.0"
+description = "Automated generation of real Swagger/OpenAPI 2.0 schemas from Django Rest Framework code."
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+coreapi = ">=2.3.3"
+coreschema = ">=0.0.4"
+Django = ">=2.2.16"
+djangorestframework = ">=3.10.3"
+inflection = ">=0.3.1"
+packaging = "*"
+"ruamel.yaml" = ">=0.15.34"
+uritemplate = ">=3.0.0"
+
+[package.extras]
+validation = ["swagger-spec-validator (>=2.1.0)"]
+
+[[package]]
+name = "entrypoints"
+version = "0.3"
+description = "Discover and load entry points from installed packages."
+category = "dev"
+optional = false
+python-versions = ">=2.7"
+
+[[package]]
+name = "filelock"
+version = "3.0.12"
+description = "A platform independent file lock."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "flake8"
+version = "3.7.7"
+description = "the modular source code checker: pep8, pyflakes and co"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+entrypoints = ">=0.3.0,<0.4.0"
+mccabe = ">=0.6.0,<0.7.0"
+pycodestyle = ">=2.5.0,<2.6.0"
+pyflakes = ">=2.1.0,<2.2.0"
+
+[[package]]
+name = "flake8-commas"
+version = "2.0.0"
+description = "Flake8 lint for trailing commas."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = ">=2,<4.0.0"
+
+[[package]]
+name = "flake8-formatter-abspath"
+version = "1.0.1"
+description = "A flake8 formatter plugin that shows the absolute path of files with warnings"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = ">=3.0.0"
+
+[[package]]
+name = "freezegun"
+version = "0.3.15"
+description = "Let your Python tests travel through time"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+python-dateutil = ">=1.0,<2.0 || >2.0"
+six = "*"
+
+[[package]]
+name = "furl"
+version = "2.0.0"
+description = "URL manipulation made simple."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+orderedmultidict = ">=1.0"
+six = ">=1.8.0"
+
+[[package]]
+name = "greenlet"
+version = "1.1.1"
+description = "Lightweight in-process concurrent programming"
+category = "main"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+
+[package.extras]
+docs = ["sphinx"]
+
+[[package]]
+name = "identify"
+version = "1.6.2"
+description = "File identification library for Python"
+category = "dev"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+
+[package.extras]
+license = ["editdistance"]
+
+[[package]]
+name = "idna"
+version = "3.2"
+description = "Internationalized Domain Names in Applications (IDNA)"
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
+name = "importlib-metadata"
+version = "4.8.1"
+description = "Read metadata from Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+perf = ["ipython"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-perf (>=0.9.2)", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+
+[[package]]
+name = "importlib-resources"
+version = "5.2.2"
+description = "Read resources from Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+zipp = {version = ">=3.1.0", markers = "python_version < \"3.10\""}
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-black (>=0.3.7)", "pytest-mypy"]
+
+[[package]]
+name = "inflection"
+version = "0.5.1"
+description = "A port of Ruby on Rails inflector to Python"
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
+name = "injector"
+version = "0.15.0"
+description = "Injector - Python dependency injection framework, inspired by Guice"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "itypes"
+version = "1.2.0"
+description = "Simple immutable types for python."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "jinja2"
+version = "3.0.1"
+description = "A very fast and expressive template engine."
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+MarkupSafe = ">=2.0"
+
+[package.extras]
+i18n = ["Babel (>=2.7)"]
+
+[[package]]
+name = "markupsafe"
+version = "2.0.1"
+description = "Safely add untrusted strings to HTML/XML markup."
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[[package]]
+name = "mccabe"
+version = "0.6.1"
+description = "McCabe checker, plugin for flake8"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "mock"
+version = "2.0.0"
+description = "Rolling backport of unittest.mock for all Pythons"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+pbr = ">=0.11"
+six = ">=1.9"
+
+[package.extras]
+docs = ["sphinx", "Pygments (<2)", "jinja2 (<2.7)", "sphinx (<1.3)"]
+test = ["unittest2 (>=1.1.0)"]
+
+[[package]]
+name = "more-itertools"
+version = "8.9.0"
+description = "More routines for operating on iterables, beyond itertools"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
+name = "nodeenv"
+version = "1.6.0"
+description = "Node.js virtual environment builder"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "orderedmultidict"
+version = "1.0.1"
+description = "Ordered Multivalue Dictionary"
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+six = ">=1.8.0"
+
+[[package]]
+name = "packaging"
+version = "21.0"
+description = "Core utilities for Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+pyparsing = ">=2.0.2"
+
+[[package]]
+name = "pbr"
+version = "5.6.0"
+description = "Python Build Reasonableness"
+category = "dev"
+optional = false
+python-versions = ">=2.6"
+
+[[package]]
+name = "platformdirs"
+version = "2.3.0"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.extras]
+docs = ["Sphinx (>=4)", "furo (>=2021.7.5b38)", "proselint (>=0.10.2)", "sphinx-autodoc-typehints (>=1.12)"]
+test = ["appdirs (==1.4.4)", "pytest (>=6)", "pytest-cov (>=2.7)", "pytest-mock (>=3.6)"]
+
+[[package]]
+name = "pluggy"
+version = "0.13.1"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+
+[package.extras]
+dev = ["pre-commit", "tox"]
+
+[[package]]
+name = "pre-commit"
+version = "1.17.0"
+description = "A framework for managing and maintaining multi-language pre-commit hooks."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+"aspy.yaml" = "*"
+cfgv = ">=2.0.0"
+identify = ">=1.0.0"
+importlib-metadata = "*"
+importlib-resources = {version = "*", markers = "python_version < \"3.7\""}
+nodeenv = ">=0.11.1"
+pyyaml = "*"
+six = "*"
+toml = "*"
+virtualenv = ">=15.2"
+
+[[package]]
+name = "pre-commit-hooks"
+version = "2.2.3"
+description = "Some out-of-the-box hooks for pre-commit."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+flake8 = "*"
+"ruamel.yaml" = ">=0.15"
+six = "*"
+
+[[package]]
+name = "py"
+version = "1.10.0"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "pycodestyle"
+version = "2.5.0"
+description = "Python style guide checker"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "pyflakes"
+version = "2.1.1"
+description = "passive checker of Python programs"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "pyparsing"
+version = "2.4.7"
+description = "Python parsing module"
+category = "main"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
+name = "pytest"
+version = "4.6.11"
+description = "pytest: simple powerful testing with Python"
+category = "dev"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+
+[package.dependencies]
+atomicwrites = ">=1.0"
+attrs = ">=17.4.0"
+colorama = {version = "*", markers = "sys_platform == \"win32\" and python_version != \"3.4\""}
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+more-itertools = {version = ">=4.0.0", markers = "python_version > \"2.7\""}
+packaging = "*"
+pluggy = ">=0.12,<1.0"
+py = ">=1.5.0"
+six = ">=1.10.0"
+wcwidth = "*"
+
+[package.extras]
+testing = ["argcomplete", "hypothesis (>=3.56)", "nose", "requests", "mock"]
+
+[[package]]
+name = "pytest-cov"
+version = "2.12.1"
+description = "Pytest plugin for measuring coverage."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+coverage = ">=5.2.1"
+pytest = ">=4.6"
+toml = "*"
+
+[package.extras]
+testing = ["fields", "hunter", "process-tests", "six", "pytest-xdist", "virtualenv"]
+
+[[package]]
+name = "pytest-django"
+version = "3.10.0"
+description = "A Django plugin for pytest."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+pytest = ">=3.6"
+
+[package.extras]
+docs = ["sphinx", "sphinx-rtd-theme"]
+testing = ["django", "django-configurations (>=2.0)", "six"]
+
+[[package]]
+name = "pytest-pythonpath"
+version = "0.7.3"
+description = "pytest plugin for adding to the PYTHONPATH from command line or configs."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+pytest = ">=2.5.2"
+
+[[package]]
+name = "python-dateutil"
+version = "2.8.0"
+description = "Extensions to the standard Python datetime module"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[package.dependencies]
+six = ">=1.5"
+
+[[package]]
+name = "pytz"
+version = "2021.1"
+description = "World timezone definitions, modern and historical"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "pyyaml"
+version = "5.4.1"
+description = "YAML parser and emitter for Python"
+category = "dev"
+optional = false
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+tokenize-rt = [
+    {file = "tokenize_rt-3.2.0-py2.py3-none-any.whl", hash = "sha256:53f5c22d36e5c6f8e3fdbc6cb4dd151d1b3d38cea1b85b5fef6268f153733899"},
+    {file = "tokenize_rt-3.2.0.tar.gz", hash = "sha256:2f44eee8f620102f8a03c50142795121faf86e020d208896ea7a7047bbe933cf"},
+]
+toml = [
+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
+]
+tox = [
+    {file = "tox-3.24.3-py2.py3-none-any.whl", hash = "sha256:9fbf8e2ab758b2a5e7cb2c72945e4728089934853076f67ef18d7575c8ab6b88"},
+    {file = "tox-3.24.3.tar.gz", hash = "sha256:c6c4e77705ada004283610fd6d9ba4f77bc85d235447f875df9f0ba1bc23b634"},
+]
+tox-travis = [
+    {file = "tox-travis-0.12.tar.gz", hash = "sha256:465cd8f71ad878962a3fce0e9e2e213994e0ae4e0c30f87fe6af1b04ea282dc4"},
+    {file = "tox_travis-0.12-py2.py3-none-any.whl", hash = "sha256:442c96b078333c94e272d0e90e4582e35e0529ea98bcd2f7f96053d690c4e7a4"},
+]
+typing-extensions = [
+    {file = "typing_extensions-3.10.0.2-py2-none-any.whl", hash = "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7"},
+    {file = "typing_extensions-3.10.0.2-py3-none-any.whl", hash = "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"},
+    {file = "typing_extensions-3.10.0.2.tar.gz", hash = "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e"},
+]
+uritemplate = [
+    {file = "uritemplate-3.0.1-py2.py3-none-any.whl", hash = "sha256:07620c3f3f8eed1f12600845892b0e036a2420acf513c53f7de0abd911a5894f"},
+    {file = "uritemplate-3.0.1.tar.gz", hash = "sha256:5af8ad10cec94f215e3f48112de2022e1d5a37ed427fbd88652fa908f2ab7cae"},
+]
+urllib3 = [
+    {file = "urllib3-1.26.6-py2.py3-none-any.whl", hash = "sha256:39fb8672126159acb139a7718dd10806104dec1e2f0f6c88aab05d17df10c8d4"},
+    {file = "urllib3-1.26.6.tar.gz", hash = "sha256:f57b4c16c62fa2760b7e3d97c35b255512fb6b59a259730f36ba32ce9f8e342f"},
+]
+virtualenv = [
+    {file = "virtualenv-20.7.2-py2.py3-none-any.whl", hash = "sha256:e4670891b3a03eb071748c569a87cceaefbf643c5bac46d996c5a45c34aa0f06"},
+    {file = "virtualenv-20.7.2.tar.gz", hash = "sha256:9ef4e8ee4710826e98ff3075c9a4739e2cb1040de6a2a8d35db0055840dc96a0"},
+]
+wcwidth = [
+    {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
+    {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
+]
+zipp = [
+    {file = "zipp-3.5.0-py3-none-any.whl", hash = "sha256:957cfda87797e389580cb8b9e3870841ca991e2125350677b2ca83a0e99390a3"},
+    {file = "zipp-3.5.0.tar.gz", hash = "sha256:f5812b1e007e48cff63449a5e9f4e7ebea716b4111f9c4f9a645f91d579bf0c4"},
+]
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..270e8ba9
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,57 @@
+[tool.poetry]
+name = "winter"
+version = "9.4.1"
+homepage = "https://github.com/WinterFramework/winter"
+description = "Web Framework inspired by Spring Framework"
+authors = ["Alexander Egorov <mofr@zond.org>"]
+classifiers = [
+    'Intended Audience :: Developers',
+    'License :: OSI Approved :: MIT License',
+    'Development Status :: 3 - Alpha',
+    'Operating System :: OS Independent',
+    'Environment :: Web Environment',
+    'Programming Language :: Python',
+    'Programming Language :: Python :: 3.6',
+    'Programming Language :: Python :: 3.7',
+    'Programming Language :: Python :: 3.8',
+    'Framework :: Django',
+    'Framework :: Django :: 1.11',
+    'Framework :: Django :: 2.0',
+    'Framework :: Django :: 2.1',
+    'Topic :: Software Development :: Libraries :: Application Frameworks',
+]
+
+[tool.poetry.dependencies]
+python = "^3.6"
+dataclasses = ">=0.6"
+djangorestframework = ">=3.9.0"
+Django = "<3.0.0>=1.11.16"
+docstring-parser = ">=0.1"
+drf-yasg = ">=1.13.0"
+furl = "2.0.0"
+python-dateutil = "2.8.0"
+injector = "0.15.0"
+SQLAlchemy = ">=1.4.0"
+typing-extensions = "^3.10.0"
+
+[tool.poetry.dev-dependencies]
+tox-travis = ">=0.10"
+codecov = ">=2.0.9"
+flake8 = "3.7.7"
+flake8-commas = "2.0.0"
+flake8-formatter-abspath = "1.0.1"
+pre-commit-hooks = "2.2.3"
+freezegun = "0.3.15"
+mock = "2.0.0"
+pytest = "<5.0.0>=3.6"
+pytest-pythonpath = ">=0.7.1"
+pytest-cov = ">=2.5.1"
+pytest-django = ">=3.2.0"
+semver = "2.8.1"
+add-trailing-comma = "1.3.0"
+pre-commit = "1.17.0"
+tox = ">=3.1.2"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
diff --git a/requirements/base.txt b/requirements/base.txt
deleted file mode 100644
index 72028292..00000000
--- a/requirements/base.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-dataclasses>=0.6
-djangorestframework>=3.9.0
-Django<3.0.0>=1.11.16
-docstring_parser>=0.1
-drf-yasg>=1.13.0
-furl==2.0.0
-python-dateutil==2.8.0
-injector==0.15.0
-sqlalchemy>=1.4.0
diff --git a/requirements/ci.txt b/requirements/ci.txt
deleted file mode 100644
index de5882ac..00000000
--- a/requirements/ci.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-# requirements for the CI test runner
-tox-travis>=0.10
-codecov>=2.0.9
-
--r tox.txt
--r flake.txt
\ No newline at end of file
diff --git a/requirements/flake.txt b/requirements/flake.txt
deleted file mode 100644
index f90c5db2..00000000
--- a/requirements/flake.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-flake8==3.7.7
-flake8-commas==2.0.0
-flake8-formatter-abspath==1.0.1
\ No newline at end of file
diff --git a/requirements/local.txt b/requirements/local.txt
deleted file mode 100644
index 90705104..00000000
--- a/requirements/local.txt
+++ /dev/null
@@ -1 +0,0 @@
-pre-commit-hooks==2.2.3
diff --git a/requirements/test.txt b/requirements/test.txt
deleted file mode 100644
index 46cd2fab..00000000
--- a/requirements/test.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-# requirements for running the tests via pytest
-freezegun==0.3.15
-mock==2.0.0
-# new version of pytest(5.0.0) do not run with pytest-django
-pytest<5.0.0>=3.6
-pytest-pythonpath>=0.7.1
-pytest-cov>=2.5.1
-pytest-django>=3.2.0
-semver==2.8.1
-add-trailing-comma==1.3.0
-pre-commit==1.17.0
-
--r flake.txt
diff --git a/requirements/tox.txt b/requirements/tox.txt
deleted file mode 100644
index a4028994..00000000
--- a/requirements/tox.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-# requirements for building and running tox
-tox>=3.1.2
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 2a9acf13..00000000
--- a/setup.cfg
+++ /dev/null
@@ -1,2 +0,0 @@
-[bdist_wheel]
-universal = 1
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 772e9621..00000000
--- a/setup.py
+++ /dev/null
@@ -1,46 +0,0 @@
-import os
-
-from setuptools import find_packages
-from setuptools import setup
-
-here = os.path.abspath(os.path.dirname(__file__))
-about = {}
-with open(os.path.join(here, 'winter', '__version__.py')) as f:
-    exec(f.read(), about)
-
-
-def read_requirements(req_file):
-    with open(os.path.join('requirements', req_file)) as req:
-        return [line.strip() for line in req.readlines() if line.strip() and not line.strip().startswith('#')]
-
-
-requirements = read_requirements('base.txt')
-
-setup(
-    name='winter',
-    packages=find_packages(),
-    include_package_data=True,
-    version=about['__version__'],
-    description='Web Framework inspired by Spring Framework',
-    url='https://github.com/mofr/winter',
-    author='Alexander Egorov',
-    author_email='mofr@zond.org',
-    license='MIT',
-    install_requires=requirements,
-    classifiers=[
-        'Intended Audience :: Developers',
-        'License :: OSI Approved :: MIT License',
-        'Development Status :: 3 - Alpha',
-        'Operating System :: OS Independent',
-        'Environment :: Web Environment',
-        'Programming Language :: Python',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-        'Framework :: Django',
-        'Framework :: Django :: 1.11',
-        'Framework :: Django :: 2.0',
-        'Framework :: Django :: 2.1',
-        'Topic :: Software Development :: Libraries :: Application Frameworks',
-    ],
-)
diff --git a/tests/test_version.py b/tests/test_version.py
index 90a8ad6b..d3e92659 100644
--- a/tests/test_version.py
+++ b/tests/test_version.py
@@ -1,10 +1,10 @@
-from winter.__version__ import __version__
+from pkg_resources import get_distribution
 from semver import parse
 
 
 def test_version_is_a_valid_semver():
     # Act
-    version = parse(__version__)
+    version = parse(get_distribution('winter').version)
 
     # Assert
     assert version['major'] > 0  # In fact we test that parse doesn't fail with ValueError
diff --git a/winter/__version__.py b/winter/__version__.py
deleted file mode 100644
index 62cab557..00000000
--- a/winter/__version__.py
+++ /dev/null
@@ -1 +0,0 @@
-__version__ = '9.4.0'