diff --git a/requirements.txt b/requirements.txt
index 27c7a454..211538fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ idna-ssl==1.1.0
 importlib-metadata==1.7.0
 importlib-resources==3.0.0
 Jinja2==2.11.3
-lxml==4.6.3
+lxml==4.9.1
 MarkupSafe==1.1.1
 multidict==4.7.6
 mysqlclient==2.0.1