include:
- python: "2.7"
env: TOXENV=py27
- - python: "3.3"
- env: TOXENV=py33
- python: "3.4"
env: TOXENV=py34
- python: "3.5"
- env: TOXENV=pypy
install:
- - travis_retry pip install tox ppu
+ - travis_retry pip install --upgrade pip setuptools tox ppu
script:
- tox