diff --git a/requirements.txt b/requirements.txt
index a8cba00..cc5a8ca 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ jupyter-client==5.3.1
 jupyter-console==6.0.0
 jupyter-core==4.5.0
 lazy-object-proxy==1.4.1
-lxml==4.4.0
+lxml==4.6.2
 macholib==1.11
 MarkupSafe==1.1.1
 mccabe==0.6.1