diff --git a/acme/setup.py b/acme/setup.py
index 7314152cd..f585b3cdd 100644
--- a/acme/setup.py
+++ b/acme/setup.py
@@ -66,6 +66,7 @@ setup(
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Security',
     ],