diff --git a/setup.py b/setup.py
index 8853bcb1..d21e2b38 100644
--- a/setup.py
+++ b/setup.py
@@ -103,7 +103,6 @@ setup(
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',