diff --git a/gce/requirements.txt b/gce/requirements.txt
index afeacab..e0a53da 100644
--- a/gce/requirements.txt
+++ b/gce/requirements.txt
@@ -4,5 +4,5 @@ gunicorn==19.9.0
 Jinja2==2.10.1
 requests==2.20.0
 Werkzeug==0.15.3
-lxml==4.5.0
+lxml==4.9.1
 httplib2==0.17.2