diff --git a/requirements.txt b/requirements.txt
index fcd35bb..390f071 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ invoke==1.4.1
 isort==4.3.21
 Jinja2==2.11.2
 lazy-object-proxy==1.4.3
-lxml==4.5.0
+lxml==4.9.1
 MarkupSafe==1.1.1
 mccabe==0.6.1
 multidict==4.7.5