diff --git a/cent6/requirements.txt b/cent6/requirements.txt
index df01b51..6cad531 100644
--- a/cent6/requirements.txt
+++ b/cent6/requirements.txt
@@ -54,7 +54,7 @@ kazoo==2.6.1
 keyring==5.7.1
 kubernetes==3.0.0
 libnacl==1.7.1
-lxml==4.3.3               # via junos-eznc, ncclient
+lxml==4.6.3               # via junos-eznc, ncclient
 mako==1.1.0
 markupsafe==1.1.1
 mock==3.0.5