diff --git a/setup.py b/setup.py
index 3a4cea3e..1a45e6df 100755
--- a/setup.py
+++ b/setup.py
@@ -74,7 +74,7 @@ setup(
         'Support for Belkin WeMo Switch plugin': ['ouimeaux'],
         'Support for text2speech plugin': ['mplayer'],
         'Support for OMXPlayer plugin': ['omxplayer'],
-        'Support for YouTube in the OMXPlayer plugin': ['youtube-dl', 'beautifulsoup4'],
+        'Support for YouTube in the OMXPlayer plugin': ['youtube-dl', 'beautifulsoup4', 'lxml'],
         'Support for Google Assistant': ['google-assistant-library'],
         'Support for the Google APIs': ['google-api-python-client'],
         'Support for most of the HTTP poll backends': ['python-dateutil'],