diff --git a/requirements.txt b/requirements.txt
index 2d4e9ce..f83195c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ requests==2.24.0
 scipy==1.6.0
 PyMySQL==0.10.1
 Scrapy==2.6.0
-lxml==4.6.5
+lxml==4.9.1
 Flask_SQLAlchemy==2.4.4
 matplotlib==3.4.0
 joblib==1.0.1