diff --git a/requirements.txt b/requirements.txt
index 316cffa..3fd92c9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ django-redis==4.10.0
 django-simpleui==2021.2
 djangorestframework==3.8.2
 idna==2.7
-lxml==4.3.4
+lxml==4.6.5
 pycparser==2.19
 Pygments==2.7.4
 pytz==2019.1