diff --git a/requirements.txt b/requirements.txt
index cd109eb..e927b19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,7 +39,7 @@ jupyterthemes==0.19.6
 kiwisolver==1.0.1
 lazy-object-proxy==1.3.1
 lesscpy==0.13.0
-lxml==4.2.5
+lxml==4.6.2
 MarkupSafe==1.0
 matplotlib==3.0.0
 mccabe==0.6.1