diff --git a/requirements.txt b/requirements.txt
index 9531b640..5ee971cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ ijson==2.2
 Jinja2==2.7.3
 kombu==4.0.2
 lockfile==0.10.2
-lxml==3.4.4
+lxml==4.6.3
 mailmanclient==1.0.0
 mangopaysdk==2.0
 Markdown==2.3.1