diff --git a/setup.py b/setup.py
index 47752c8d..037af388 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ import setuptools
 import sys
 
 
-requirements = ["httplib2", "prettytable"]
+requirements = ["httplib2", "lxml", "prettytable"]
 if sys.version_info < (2, 6):
     requirements.append("simplejson")
 if sys.version_info < (2, 7):