diff --git a/.travis.yml b/.travis.yml
index ec90ef81..fa35800d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,8 +7,9 @@ python:
   - 3.4
   - 3.5
   - pypy
-install:
+  - pypy3
+cache: pip
+before_install:
   - pip uninstall -y nose
-  - pip install -r requirements.txt --use-mirrors
 script:
   - python setup.py build_tests || python setup.py egg_info; python selftest.py