diff --git a/requirements.txt b/requirements.txt
index a772d9f0..e527f605 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ Jinja2==2.10.1
 jmespath==0.9.5
 keyring==10.6.0
 keyrings.alt==3.0
-lxml==4.4.0
+lxml==4.9.1
 MarkupSafe==1.1.1
 ncclient==0.6.6
 netaddr==0.7.19