diff --git a/.travis.yml b/.travis.yml
index 87d81d6..f34c327 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ python:
   - "2.7"
   - "3.4"
 install: pip install tox-travis
-script: tox
+script: tox -e p27 -e p34
 addons:
   apt:
     packages:
diff --git a/tox.ini b/tox.ini
index 9d09e06..d22a433 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py27, py34
+envlist = py27, py35
 
 [testenv]
 commands = py.test --cov dimarray tests  --cov-report=term