diff --git a/.travis.yml b/.travis.yml
index 9829f38..37c5317 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,18 +1,15 @@
 language: python
 sudo: false
-matrix:
-  include:
-    - python: 3.5
-      env: TOXENV=py35
-env:
-    - TOXENV=py27
-    - TOXENV=py33
-    - TOXENV=py34
-    - TOXENV=pypy
-    - TOXENV=pypy3
+python:
+  - 2.7
+  - 3.3
+  - 3.4
+  - 3.5
+  - pypy
+  - pypy3
 install:
-    - travis_retry pip install tox
+  - pip install tox-travis
 script:
-    - tox
+  - tox
 notifications:
     email: false