diff --git a/requirements.txt b/requirements.txt
index f284eb2..7c90dd1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ jsonschema==3.0.1
 jupyter-client==5.3.1
 jupyter-core==4.5.0
 kiwisolver==1.1.0
-lxml==4.4.0
+lxml==4.6.2
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 mistune==0.8.4