diff --git a/python/requirements.txt b/python/requirements.txt
index 2e49d57..8239935 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -17,7 +17,7 @@ itsdangerous==0.24
 Jinja2==2.10
 language-selector==0.1
 louis==2.6.4
-lxml==3.5.0
+lxml==4.9.1
 Mako==1.0.3
 MarkupSafe==1.0
 oauthlib==1.0.3