diff --git a/requirements.txt b/requirements.txt
index 2c87dcd..2f5284b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ itsdangerous==1.1.0
 Jinja2==2.10.1
 keyring==10.6.0
 keyrings.alt==3.0
-lxml==4.3.4
+lxml==4.6.5
 MarkupSafe==1.1.1
 ncclient==0.6.6
 netaddr==0.7.19