diff --git a/setup.cfg b/setup.cfg
index fec68694..9fec9cba 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -12,6 +12,10 @@ home-page = https://wiki.openstack.org/wiki/Freezer
 classifier =
     Environment :: OpenStack
     Programming Language :: Python
+    Programming Language :: Python :: 2
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.5
     Development Status :: 5 - Production/Stable
     Natural Language :: English
     Intended Audience :: Developers