diff --git a/requirements.txt b/requirements.txt
index 599076c..9e582fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ google-api-python-client==1.5.3
 ipython==1.1.0
 Jinja2==2.7.2
 lark-parser==0.7.1
-lxml==3.6.4
+lxml==4.6.5
 markdown==3.1
 MarkupSafe==0.19
 matplotlib==2.2.4