diff --git a/pyglotaran/__init__.py b/pyglotaran/__init__.py
index 09ce874..cef0b9d 100644
--- a/pyglotaran/__init__.py
+++ b/pyglotaran/__init__.py
@@ -1,4 +1,5 @@
 """Enables 'import pyglotaran' as well as the default 'import glotaran'."""
+
 import sys
 from importlib.util import find_spec
 
diff --git a/setup.cfg b/setup.cfg
index 632fbe7..f9a3806 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -8,14 +8,12 @@ url = https://github.com/glotaran/pyglotaran-alias
 author = Sebastian Weigand
 author_email = s.weigand.phy@gmail.com
 license = Apache-2.0
-license_file = LICENSE
+license_files = LICENSE
 classifiers =
     Development Status :: 4 - Beta
     License :: OSI Approved :: Apache Software License
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
     Programming Language :: Python :: Implementation :: CPython
     Topic :: Scientific/Engineering
     Topic :: Scientific/Engineering :: Chemistry