diff --git a/requirements.txt b/requirements.txt
index 4bbf1cb..6c5188b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ tqdm==4.31.1
 bs4==0.0.1
 statsmodels==0.9.0
 scipy==1.2.1
-lxml==4.3.3
+lxml==4.9.1
 python-dotenv==0.10.1
 pyyaml==5.1.1
 tabulate==0.8.2