diff --git a/requirements.txt b/requirements.txt
index 06fa17e..63aeaa6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ isort==4.3.21
 itsdangerous==1.1.0
 Jinja2==2.11.3
 lazy-object-proxy==1.4.3
-lxml==4.6.3
+lxml==4.9.1
 Mako==1.1.2
 MarkupSafe==1.1.1
 mccabe==0.6.1