diff --git a/requirements.txt b/requirements.txt
index a4309d4..973ceca 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ httplib2==0.9.1
 idna==2.0
 ipaddress==1.0.16
 lockfile==0.12.2
-lxml==3.5.0
+lxml==4.6.5
 ndg-httpsclient==0.4.0
 oauthlib==1.0.3
 oneconf==0.3.9