diff --git a/requirements.txt b/requirements.txt
index c22080a..bad5372 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ itsdangerous==1.1.0
 jdcal==1.4.1
 Jinja2==2.11.0
 justpy==0.0.5
-lxml==4.4.2
+lxml==4.6.2
 MarkupSafe==1.1.1
 mpmath==1.1.0
 numpy==1.18.1