diff --git a/requirements.txt b/requirements.txt
index e236a46..feac290 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ isort==4.3.18
 itsdangerous==1.1.0
 Jinja2==2.11.3
 lazy-object-proxy==1.4.0
-lxml==4.6.5
+lxml==4.9.1
 MarkupSafe==1.1.1
 mccabe==0.6.1
 pylint==2.3.1