diff --git a/requirements.txt b/requirements.txt
index 9f7fd06..5baa188 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ jsonschema==2.6.0
 jupyter-client==5.2.3
 jupyter-console==5.2.0
 jupyter-core==4.4.0
-lxml==4.2.1
+lxml==4.6.2
 MarkupSafe==1.0
 mistune==0.8.3
 nbconvert==5.3.1