diff --git a/.travis.yml b/.travis.yml
index b687526..6e7210d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -qq libevent-dev python-gevent
   - sudo pip install gevent
+  - sudo pip install simplejson
 script:
   - python test.py
 branches: