diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
new file mode 100644
index 0000000..ad92a5e
--- /dev/null
+++ b/.github/workflows/testing.yml
@@ -0,0 +1,36 @@
+name: testing
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ['3.9', '3.10', '3.11']
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+    - name: Install package
+      run: |
+        python -m pip install .[tests]
+    - name: Lint with flake8
+      run: |
+        flake8 examples tests pypermut
+    - name: Test with pytest
+      run: |
+        pytest
diff --git a/README.md b/README.md
index 3ac6cd3..9635584 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # P*y*ꟼ*ermut*
 
-[![Code PythonVersion](https://img.shields.io/badge/python-3.8+-blue)](https://img.shields.io/badge/python-3.8+-blue)
+[![Code PythonVersion](https://img.shields.io/badge/python-3.9+-blue)](https://img.shields.io/badge/python-3.9+-blue)
+[![Tests](https://github.com/qbarthelemy/PyPermut/workflows/testing/badge.svg?branch=main&event=push)](https://github.com/qbarthelemy/pypermut/actions)
 [![License](https://img.shields.io/badge/licence-BSD--3--Clause-green)](https://img.shields.io/badge/license-BSD--3--Clause-green)
 [![Country](https://img.shields.io/badge/made%20in-France-blue)](https://img.shields.io/badge/made%20in-France-blue)
 
diff --git a/pyproject.toml b/pyproject.toml
index ac04a7d..95a9d31 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,11 +1,18 @@
-[tool.poetry]
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
 name = "pypermut"
 version = "0.2.2"
 description = "PyPermut is a Python package implementing permutation tests"
-authors = ["Quentin Barthelemy", "Anonymous", "Louis Mayaud"]
+authors = [
+    { name = "Quentin Barthelemy" },
+    { name = "Anonymous" },
+    { name = "Louis Mayaud" },
+]
 license = "BSD-3-Clause"
 readme = "README.md"
-homepage = "https://github.com/qbarthelemy/PyPermut"
 classifiers = [
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3 :: Only",
@@ -14,19 +21,13 @@ classifiers = [
     "Topic :: Statistics",
     "Topic :: Machine Learning",
 ]
-packages = [
-    { include = "pypermut" },
+requires-python = ">=3.9"
+dependencies = [
+    "numpy >= 1.16.5",
+    "scipy >= 1.6.0",
+    "matplotlib >= 3.0.1",
 ]
 
-[tool.poetry.dependencies]
-python = "^3.8"
-numpy = "^1.16.5"
-scipy = "^1.6.0"
-matplotlib = "^3.0.0"
-
-[tool.poetry.dev-dependencies]
-pytest = "^3.0"
-
-[build-system]
-requires = ["poetry-core>=1.0.0"]
-build-backend = "poetry.core.masonry.api"
+[project.optional-dependencies]
+docs = ["sphinx", "sphinx-gallery", "numpydoc", "scikit-learn"]
+tests = ["flake8", "pytest"]
diff --git a/setup.py b/setup.py
index 3102a9c..db8f99d 100644
--- a/setup.py
+++ b/setup.py
@@ -8,13 +8,25 @@
     'author': 'Quentin Barthelemy',
     'url': 'https://github.com/qbarthelemy/PyPermut',
     'packages': ['pypermut'],
+    'platforms': 'any',
+    'python_requires': '>=3.9,<4.0',
     'install_requires': [
         'matplotlib>=3.0.0',
         'numpy>=1.16.5',
         'scipy>=1.6.0,<1.17.0',
-        'setuptools>=52.0.0'
     ],
-    'python_requires': '>=3.7,<4.0',
+    'extras_require': {
+        'docs': [
+            'sphinx',
+            'sphinx-gallery',
+            'numpydoc',
+            'scikit-learn',
+        ],
+        'tests': [
+            'flake8',
+            'pytest',
+        ],
+    },
 }