diff --git a/.travis.yml b/.travis.yml
index eb9ac8a..a30cb68 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ env:
   - TOX_ENV=py26openssl14
   - TOX_ENV=py27openssl13
   - TOX_ENV=py27openssl14
+  - TOX_ENV=py33openssl14
   - TOX_ENV=py34openssl14
   - TOX_ENV=pypyopenssl13
   - TOX_ENV=pypyopenssl14
diff --git a/oauth2client/tools.py b/oauth2client/tools.py
index 1f93173..f6c5829 100644
--- a/oauth2client/tools.py
+++ b/oauth2client/tools.py
@@ -24,12 +24,12 @@ from __future__ import print_function
 __author__ = 'jcgregorio@google.com (Joe Gregorio)'
 __all__ = ['argparser', 'run_flow', 'run', 'message_if_missing']
 
-import BaseHTTPServer
 import logging
 import socket
 import sys
 import webbrowser
 
+from six.moves import BaseHTTPServer
 from six.moves import urllib
 
 from oauth2client import client
diff --git a/tox.ini b/tox.ini
index de6804c..5c48fb6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -41,6 +41,11 @@ basepython = python2.7
 deps = {[testenv]deps}
     pyopenssl==0.14
 
+[testenv:py33openssl14]
+basepython = python3.3
+deps = {[testenv]deps}
+    pyopenssl==0.14
+
 [testenv:py34openssl14]
 basepython = python3.4
 deps = {[testenv]deps}