diff --git a/requirements.txt b/requirements.txt
index 30feede..965c893 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,6 +6,6 @@ Werkzeug==0.15.3
 requests==2.20.0
 beautifulsoup4==4.6.3
 flask_restful==0.3.6
-lxml==4.6.2
+lxml==4.9.1
 flask_cors
 gevent==1.3.6