diff --git a/server/requirements.txt b/server/requirements.txt
index a112ff3..2836888 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -24,7 +24,7 @@ itsdangerous==1.1.0
 Jinja2==2.11.2
 joblib==1.0.0
 loguru==0.5.3
-lxml==4.6.2
+lxml==4.9.1
 MarkupSafe==1.1.1
 nltk==3.5
 pycodestyle==2.6.0