diff --git a/requirements.txt b/requirements.txt
index e47474f..8bbdfe0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ Flask==1.0.2
 idna==2.5
 itsdangerous==0.24
 Jinja2==2.10
-lxml==4.2.4
+lxml==4.9.1
 MarkupSafe==1.0
 ncclient==0.6.0
 netmiko==2.2.2