diff --git a/setup.py b/setup.py
index 20679d4df..7fe8b818d 100644
--- a/setup.py
+++ b/setup.py
@@ -31,6 +31,7 @@
     'jinja2',
     'juju',
     'juju-wait',
+    'lxml',
     'PyYAML',
     'tenacity',
     'oslo.config',