diff --git a/requirements/base.txt b/requirements/base.txt
index 117320d4..79cdff1c 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -5,7 +5,7 @@ Flask-Caching==1.8.0
 redis==3.5.2
 Flask-DotEnv==0.1.1
 python-dotenv==0.10.1
-lxml==4.5.0
+lxml==4.9.1
 requests==2.23.0
 pandas==1.0.3
 tweepy==3.8.0