diff --git a/doc/contributing/getting_started.rst b/doc/contributing/getting_started.rst
index 165e38e3f..8054713ac 100644
--- a/doc/contributing/getting_started.rst
+++ b/doc/contributing/getting_started.rst
@@ -42,10 +42,10 @@ To do so, run the following commands::
   $ source <path>/bin/activate
   $ git clone https://github.com/modoboa/modoboa.git
   $ cd modoboa
-  $ python setup.py develop
+  $ pip install -e .
   $ pip install -r dev-requirements.txt
 
-The ``develop`` command creates a symbolic link to your local copy so
+This will create a symbolic link to your local copy so
 any modification you make will be automatically available in your
 environment, no need to copy them.
 
diff --git a/docker-compose.yml b/docker-compose.yml
index b0f3ef359..4a6186688 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -36,7 +36,7 @@ services:
     command: >
       sh -c "cd test_project
              python3 manage.py migrate
-             python3 manage.py load_initial_data
+             python3 manage.py load_initial_data --dev
              django-admin compilemessages
              python3 manage.py runserver_plus 0.0.0.0:8000 --cert-file cert.crt"
     volumes:
diff --git a/pyproject.toml b/pyproject.toml
index 519a26022..1fe7c53e0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.0", "setuptools_scm[toml]>=6.2"]
+requires = ["setuptools>=61.0", "setuptools_scm[toml]>=6.4"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -43,3 +43,9 @@ repository = "https://github.com/modoboa/modoboa"
 
 [tool.setuptools.dynamic]
 version = {attr = "modoboa.version.get_version"}
+dependencies = {file = ["requirements.txt"]}
+optional-dependencies.dev = { file = ["dev-requirements.txt"] }
+optional-dependencies.test = { file = ["test-requirements.txt"] }
+optional-dependencies.ldap = { file = ["ldap-requirements.txt"] }
+optional-dependencies.mysql = { file = ["mysql-requirements.txt"] }
+optional-dependencies.postgresql = { file = ["postgresql-requirements.txt"] }
diff --git a/setup.py b/setup.py
index c5c91f3eb..eb16ce2dd 100644
--- a/setup.py
+++ b/setup.py
@@ -9,39 +9,11 @@ https://packaging.python.org/en/latest/distributing.html
 
 from os import path
 
-try:
-    from pip.req import parse_requirements
-except ImportError:
-    # pip >= 10
-    from pip._internal.req import parse_requirements
-
 from setuptools import find_packages, setup
 
 
-def get_requirements(requirements_file):
-    """Use pip to parse requirements file."""
-    requirements = []
-    if path.isfile(requirements_file):
-        for req in parse_requirements(requirements_file, session="hack"):
-            try:
-                if req.markers:
-                    requirements.append("%s;%s" % (req.req, req.markers))
-                else:
-                    requirements.append("%s" % req.req)
-            except AttributeError:
-                # pip >= 20.0.2
-                requirements.append(req.requirement)
-    return requirements
-
-
 if __name__ == "__main__":
     HERE = path.abspath(path.dirname(__file__))
-    INSTALL_REQUIRES = get_requirements(path.join(HERE, "requirements.txt"))
-    MYSQL_REQUIRES = get_requirements(path.join(HERE, "mysql-requirements.txt"))
-    POSTGRESQL_REQUIRES = get_requirements(
-        path.join(HERE, "postgresql-requirements.txt")
-    )
-    LDAP_REQUIRES = get_requirements(path.join(HERE, "ldap-requirements.txt"))
 
     with open(path.join(HERE, "README.rst")) as readme:
         LONG_DESCRIPTION = readme.read()
@@ -52,42 +24,15 @@ if __name__ == "__main__":
         return ""
 
     setup(
-        name="modoboa",
-        description="Mail hosting made simple",
         long_description=LONG_DESCRIPTION,
-        license="ISC",
-        url="http://modoboa.org/",
-        author="Antoine Nguyen",
-        author_email="tonio@ngyn.org",
-        classifiers=[
-            "Development Status :: 5 - Production/Stable",
-            "Environment :: Web Environment",
-            "Framework :: Django :: 2.2",
-            "Intended Audience :: System Administrators",
-            "License :: OSI Approved :: ISC License (ISCL)",
-            "Operating System :: OS Independent",
-            "Programming Language :: Python :: 3",
-            "Programming Language :: Python :: 3.7",
-            "Programming Language :: Python :: 3.8",
-            "Programming Language :: Python :: 3.9",
-            "Topic :: Communications :: Email",
-            "Topic :: Internet :: WWW/HTTP",
-        ],
-        keywords="email",
         packages=find_packages(
             exclude=["doc", "test_data", "test_project", "frontend"]
         ),
         include_package_data=True,
         zip_safe=False,
         scripts=["bin/modoboa-admin.py"],
-        install_requires=INSTALL_REQUIRES,
         use_scm_version={"local_scheme": local_scheme},
-        python_requires=">=3.7",
-        setup_requires=["setuptools_scm>6.4"],
         extras_require={
-            "ldap": LDAP_REQUIRES,
-            "mysql": MYSQL_REQUIRES,
-            "postgresql": POSTGRESQL_REQUIRES,
             "argon2": ["argon2-cffi >= 16.1.0"],
         },
     )