diff --git a/requirements.txt b/requirements.txt
index 82f9822f..1796f9a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,3 +6,4 @@ simplejson==2.0.9
 unittest2
 mock
 #python-simple-hipchat
+msgpack-python==0.4.2