diff --git a/.travis.yml b/.travis.yml
index c124f0a..9fe1f4a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,6 +30,7 @@ jobs:
       env: TOXENV=py34-cov
 
 install:
+  - pip install -U pip virtualenv
   - pip install tox
 
 script: