diff --git a/setup.py b/setup.py
index 3313ead1..5751614e 100755
--- a/setup.py
+++ b/setup.py
@@ -88,7 +88,6 @@
     'Programming Language :: Python :: 2',
     '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',
diff --git a/tox.ini b/tox.ini
index 4fdebd70..125adf4e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py27, py33, py34, py35, py36
+envlist = py27, py34, py35, py36
 
 [testenv]
 changedir = tests