diff --git a/.travis.yml b/.travis.yml
index 07d488445..46722bd1c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ python:
   - "2.5"
 # command to install dependencies, e.g. pip install -r requirements.txt --use-mirrors
 install:
+  - pytz
 # command to run tests, e.g. python setup.py test
 script:
   - python setup.py install