diff --git a/requirements-dev.txt b/requirements-dev.txt
index 65d2c28..d46f829 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -26,7 +26,7 @@ django-progressive-web-app==0.1.1
 rules==2.0.1
 django-role-permissions==2.2.1
 cssselect==1.0.3
-lxml==4.6.3
+lxml==4.9.1
 splinter==0.10.0
 pytest-splinter==2.0.1
 django-polymorphic==2.0.3