diff --git a/requirements.txt b/requirements.txt
index 137c779..ea5aca1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ django-templated-email==3.0.1
 django==4.1.7
 idna==3.4 ; python_version >= '3.5'
 isodate==0.6.1
-lxml==4.6.5 ; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+lxml==4.9.1 ; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
 mysqlclient==2.1.1
 oauthlib==3.2.2 ; python_version >= '3.6'
 platformdirs==3.0.0 ; python_version >= '3.7'