diff --git a/requirements.txt b/requirements.txt
index ee2a98c..4130c2a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ HTMLParser==0.0.2
 importlib_metadata==4.8.1
 keyring==23.4.0
 lockfile==0.12.2
-lxml==4.7.1
+lxml==4.9.1
 mock==4.0.3
 numpy==1.21.5
 ordereddict==1.1