diff --git a/.travis.yml b/.travis.yml
index 2104b0b..2db506a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,8 @@
 language: python
 python:
  - "2.7"
+virtualenv:
+  system_site_packages: true
 sudo: required
 before_install:
  - "sudo apt-get update -qq"