diff --git a/tox.ini b/tox.ini
index d4f0863d34..769520e0b2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,6 +29,10 @@ setenv = VIRTUAL_ENV={envdir}
 commands =
   nosetests test/unit/common/test_exceptions.py
 
+[testenv:py35]
+commands =
+  nosetests test/unit/common/test_exceptions.py
+
 [testenv:pep8]
 basepython = python2.7
 commands =