diff --git a/bbdev/config/requirements.txt b/bbdev/config/requirements.txt
index 1ec583e..cda4920 100644
--- a/bbdev/config/requirements.txt
+++ b/bbdev/config/requirements.txt
@@ -32,7 +32,7 @@ idna==2.0
 jsonfield==1.0.3
 ldap3==0.9.8.7
 logilab-common==1.0.2
-lxml==3.4.4
+lxml==4.9.1
 Mako==1.0.2
 Markdown==2.6.2
 MarkupSafe==0.23