diff --git a/requirements.txt b/requirements.txt
index ccb5e7b..398ed01 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ flake8==3.5.0
 html5lib==0.9999999
 httplib2==0.9.1
 idna==2.6
-lxml==4.6.2
+lxml==4.9.1
 mccabe==0.6.1
 oauthlib==2.0.6
 paramiko==2.4.*