diff --git a/requirements.txt b/requirements.txt
index 8cfe339..d9161f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ greenlet==1.0.0
 h11==0.12.0
 idna==2.10
 jinja2==2.11.3
-lxml==4.6.3
+lxml==4.9.1
 markupsafe==2.0.1
 netifaces==0.11.0
 pbkdf2==1.3