diff --git a/backend/requirements.txt b/backend/requirements.txt
index fa351dc..85fafde 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -16,7 +16,7 @@ fastapi==0.61.1
 h11==0.11.0
 idna==2.10
 jinja2==2.11.2
-lxml==4.5.2
+lxml==4.9.1
 markupsafe==1.1.1
 passlib==1.7.4
 premailer==3.7.0