diff --git a/.travis.yml b/.travis.yml
index bb1f5af1..8f5dc3a3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,6 @@ python:
     - "2.6"
     - "2.7"
 install:
-    - pip install nose --use-mirrors
+    - pip install nose unittest2 mock --use-mirrors
     - pip install . --use-mirrors
 script: nosetests -s tests