diff --git a/appinit/docker/base/requirements.txt b/appinit/docker/base/requirements.txt
index d83778b..a645148 100644
--- a/appinit/docker/base/requirements.txt
+++ b/appinit/docker/base/requirements.txt
@@ -21,6 +21,6 @@ querystring-parser==1.2.3
 markdown2==2.3.4
 Flask==0.11.1
 ldap3==1.2.2
-lxml==3.6.0
+lxml==4.9.1
 six==1.10.0
 -e git://github.com/app-init/python3-saml.git@master#egg=python3_saml
\ No newline at end of file