diff --git a/requirements.txt b/requirements.txt
index bf593fd..8b192bf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ Jinja2==2.10
 jmespath==0.9.3
 jsonpickle==0.9.6
 kombu==4.2.1
-lxml==3.7.2
+lxml==4.6.5
 MarkupSafe==1.0
 mock==2.0.0
 moto==1.1.24