diff --git a/requirements.txt b/requirements.txt
index fff3bbf..54d13d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,6 @@ click==7.1.2
 Flask==1.1.2
 itsdangerous==1.1.0
 Jinja2==2.11.2
-lxml==4.5.2
+lxml==4.6.3
 MarkupSafe==1.1.1
 Werkzeug==1.0.1