diff --git a/requirements.txt b/requirements.txt
index 7cf85ca..939f678 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ Jinja2==2.11.2
 joblib==0.14.1
 langdetect==1.0.7
 lazy-object-proxy==1.4.3
-lxml==4.5.0
+lxml==4.9.1
 MarkupSafe==1.1.1
 mccabe==0.6.1
 mongo==0.2.0