diff --git a/setup.cfg b/setup.cfg
index 25795e9..36be0a4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,9 +1,9 @@
 [metadata]
 name = WSME
-author = Christophe de Vienne
-author-email = python-wsme@googlegroups.com
 summary = Simplify the writing of REST APIs, and extend them with additional protocols.
-description-file = README.rst
+author = Christophe de Vienne
+author_email = python-wsme@googlegroups.com
+description_file = README.rst
 url = https://opendev.org/x/wsme
 license = MIT
 python_requires = >=3.6
@@ -12,13 +12,7 @@ classifier =
     Operating System :: OS Independent
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.5
-    Programming Language :: Python :: 3.6
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
-    Programming Language :: Python :: Implementation :: CPython
-    Programming Language :: Python :: Implementation :: PyPy
+    Programming Language :: Python :: 3  :: Only
     License :: OSI Approved :: MIT License
     Topic :: Internet :: WWW/HTTP :: WSGI
     Topic :: Software Development :: Libraries :: Python Modules