diff --git a/requirements.txt b/requirements.txt
index 8f4c8c4..b7169f8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ jupyter-core==4.6.1
 kiwisolver==1.1.0
 language-selector==0.1
 lazy-object-proxy==1.4.3
-lxml==4.2.1
+lxml==4.6.3
 MarkupSafe==1.0
 matplotlib==3.1.2
 mccabe==0.6.1