diff --git a/.travis.yml b/.travis.yml
index 2b8fc1e..11164d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,12 @@
 language: python
-env:
-- TOXENV=py27
-- TOXENV=py33
-- TOXENV=py34
+matrix:
+  include:
+    - python: 2.7
+      env: TOXENV=py27
+    - python: 3.5
+      env: TOXENV=py35
+    - python: 3.6
+      env: TOXENV=py36
 install:
 - pip install tox
 script:
diff --git a/tox.ini b/tox.ini
index f5aa006..8713cf8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py33,py34
+envlist = py27,py35,py36
 
 [testenv]
 deps =