diff --git a/demo_proj/requirements.txt b/demo_proj/requirements.txt
index 546b416..ea79f7a 100644
--- a/demo_proj/requirements.txt
+++ b/demo_proj/requirements.txt
@@ -14,7 +14,7 @@ djangorestframework==3.11.2
 hyperlink==19.0.0
 idna==2.9
 incremental==17.5.0
-lxml==4.6.3
+lxml==4.9.1
 parsel==1.6.0
 Protego==0.1.16
 pyasn1==0.4.8