diff --git a/requirements.txt b/requirements.txt
index 034a7b3..15cb61e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ jupyter-core==4.6.0
 jupyterlab==1.1.4
 jupyterlab-server==1.0.6
 kiwisolver==1.1.0
-lxml==4.4.2
+lxml==4.6.2
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 mistune==0.8.4