diff --git a/requirements.txt b/requirements.txt
index 1b72681..f08b3c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ idna==2.8
 isodate==0.6.0
 isort==4.3.21
 lazy-object-proxy==1.4.2
-lxml==4.4.1
+lxml==4.9.1
 mccabe==0.6.1
 orderedmultidict==1.0.1
 psycopg2-binary==2.8.3