diff --git a/examples/mp_api.py b/examples/mp_api.py
index 9fefbac..131b37b 100644
--- a/examples/mp_api.py
+++ b/examples/mp_api.py
@@ -1,4 +1,5 @@
 """Simple script illustrating some of the features of this package."""
+
 from pprint import pprint
 
 from fastapi.responses import HTMLResponse
diff --git a/marketplace/app/__init__.py b/marketplace/app/__init__.py
index c4ba784..72dda56 100644
--- a/marketplace/app/__init__.py
+++ b/marketplace/app/__init__.py
@@ -3,6 +3,7 @@
 .. currentmodule:: marketplace.app
 .. moduleauthor:: Pablo de Andres, Pranjali Singh (Fraunhofer IWM)
 """
+
 from typing import Optional
 
 from packaging.version import parse
diff --git a/setup.cfg b/setup.cfg
index d2da37b..faf4323 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,7 +27,7 @@ install_requires =
     rdflib==6.2.0
     rdflib-jsonld==0.6.2
     requests>2.26.0,<3.0
-python_requires = >=3.8
+python_requires = >=3.9
 
 [options.entry_points]
 console_scripts =
diff --git a/setup.py b/setup.py
index 5948248..63e14cb 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,5 @@
 """This file is required for editable installs of the package."""
+
 from setuptools import setup
 
 setup()