diff --git a/setup.py b/setup.py
index ec05f26..3bcf2ab 100644
--- a/setup.py
+++ b/setup.py
@@ -69,6 +69,7 @@ setup(
     packages=['fbchat'],
     install_requires=[
         'requests',
+        'lxml',
         'beautifulsoup4'
     ],
     url=source,