diff --git a/requirements.txt b/requirements.txt
index cb2b8bd..e633dea 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ chardet==3.0.4
 cryptography==2.6.1
 idna==2.8
 Jinja2==2.10.1
-lxml==4.3.3
+lxml==4.9.1
 MarkupSafe==1.1.1
 ncclient==0.6.4
 netmiko==2.3.3