diff --git a/.github/workflows/ci-build-unstable.yml b/.github/workflows/ci-build-unstable.yml
index 0a230290..f9ea863a 100644
--- a/.github/workflows/ci-build-unstable.yml
+++ b/.github/workflows/ci-build-unstable.yml
@@ -1,8 +1,8 @@
 name: Build
 
-on: [push]
+on: [ push ]
 
-concurrency: 
+concurrency:
   group: build
 #  cancel-in-progress: true
 
@@ -10,24 +10,29 @@ concurrency:
 jobs:
   build:
     runs-on: ubuntu-latest
-
+    strategy:
+      matrix:
+        python-version: [ 3.8, 3.9 ]
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v2
-      with:
-        python-version: "3.8"
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install flake8 pytest
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-    - name: Lint with flake8
-      run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-    - name: Test with pytest
-      run: |
-        pytest
\ No newline at end of file
+      - name: Cleanup more disk space
+        run: sudo rm -rf /usr/share/dotnet && sudo rm -rf /opt/ghc && sudo rm -rf "/usr/local/share/boost" && sudo rm -rf "$AGENT_TOOLSDIRECTORY"
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: 'pip'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install flake8 pytest
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+      - name: Lint with flake8
+        run: |
+          # stop the build if there are Python syntax errors or undefined names
+          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+      - name: Test with pytest
+        run: |
+          pytest
\ No newline at end of file
diff --git a/classifiers.txt b/classifiers.txt
new file mode 100644
index 00000000..c92b88c2
--- /dev/null
+++ b/classifiers.txt
@@ -0,0 +1,3 @@
+Programming Language :: Python :: 3.8
+License :: OSI Approved :: Apache Software License
+Operating System :: OS Independent
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..ddaf17f3
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,36 @@
+[build-system]
+requires = ["setuptools>=42", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[tool.bumpversion]
+current_version = "0.3.4"
+commit = "true"
+tag = "true"
+tag_name = "v{new_version}"
+
+[project]
+name = "delft"
+description = "a Deep Learning Framework for Text"
+readme = "Readme.md"
+authors = [
+    { name = "Patrice Lopez", email = "patrice.lopez@science-miner.com" }
+]
+maintainers = [
+    { name = "Patrice Lopez", email = "patrice.lopez@science-miner.com" },
+    { name = "Luca Foppiano", email = "lucanoro@duck.com" }
+]
+requires-python = ">=3.7"
+
+dynamic = ['version', "dependencies"]
+
+[tool.setuptools.dynamic]
+dependencies = {file = ["requirements.txt"]}
+classifiers = {file = ["classifiers.txt"]}
+
+[project.urls]
+Homepage = "https://github.com/kermitt2/delft"
+Repository = "https://github.com/kermitt2/delft"
+Changelog = "https://github.com/kermitt2/delft"
+
+[tool.setuptools.packages.find]
+exclude = ["test", "*.test", "*.test.*"]
\ No newline at end of file
diff --git a/requirements.txt.dev b/requirements.txt.dev
new file mode 100644
index 00000000..ea910fe1
--- /dev/null
+++ b/requirements.txt.dev
@@ -0,0 +1 @@
+bump-my-version
diff --git a/setup.py b/setup.py
deleted file mode 100644
index ffdfb580..00000000
--- a/setup.py
+++ /dev/null
@@ -1,39 +0,0 @@
-from setuptools import setup, find_packages
-
-setup(
-    name="delft",
-    version="0.3.4",
-    author="Patrice Lopez",
-    author_email="patrice.lopez@science-miner.com",
-    description="a Deep Learning Framework for Text",
-    long_description=open("Readme.md", encoding='utf-8').read(),
-    long_description_content_type="text/markdown",
-    url="https://github.com/kermitt2/delft",
-    packages=find_packages(exclude=['test', '*.test', '*.test.*']),  
-    include_package_data=True,
-    python_requires='>=3.7',
-    install_requires=[
-        'numpy==1.22.3',
-        'regex==2021.11.10',
-        'scikit-learn==1.0.1',
-        'tqdm==4.62.3',
-        'tensorflow==2.9.3',
-        'h5py==3.6.0',
-        'unidecode==1.3.2',
-        'pydot==1.4.0',
-        'lmdb==1.2.1',
-        'transformers==4.33.2', 
-        'torch==1.10.1',
-        'truecase',
-        'requests>=2.20',
-        'pandas==1.3.5',
-        'pytest',
-        'tensorflow-addons==0.19.0',
-        'accelerate>=0.20.3'
-    ],
-    classifiers=[
-        "Programming Language :: Python :: 3.8",
-        "License :: OSI Approved :: Apache Software License",
-        "Operating System :: OS Independent",
-    ],
-)