diff --git a/requirements.txt b/requirements.txt
index 1e66f3b..0bfd5b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ idna==2.6
 isort==4.3.4
 kombu==4.1.0
 lazy-object-proxy==1.3.1
-lxml==4.2.1
+lxml==4.9.1
 mccabe==0.6.1
 pycodestyle==2.3.1
 pylint==1.8.3