diff --git a/requirements.txt b/requirements.txt
index 927bbf7b3..12800d885 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ babel==2.9.1
 flask-babel==2.0.0
 flask==2.0.2
 jinja2==3.0.2
-lxml==4.6.3
+lxml==4.6.4
 pygments==2.10.0
 python-dateutil==2.8.2
 pyyaml==6.0