diff --git a/requirements.txt b/requirements.txt
index f44b15f..f4cc025 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ django==3.0.7
 django_heroku==0.3.1
 Requests==2.23.0
 Beautifulsoup4==4.8.2
-lxml==4.5.0
+lxml==4.9.1