diff --git a/requirements.txt b/requirements.txt
index a97101b..b14ec0d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ importlib-metadata==1.6.0
 itsdangerous==1.1.0
 Jinja2==2.11.2
 kombu==4.6.8
-lxml==4.5.0
+lxml==4.9.1
 MarkupSafe==1.1.1
 pymongo==3.10.1
 python-dateutil==2.8.1