diff --git a/requirements.txt b/requirements.txt
index 8281996..83d2ec8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ Jinja2==2.10.3
 jsonschema==3.1.1
 kombu==4.6.5
 lunardate==0.2.0
-lxml==4.4.1
+lxml==4.6.5
 MarkupSafe==1.1.1
 more-itertools==7.2.0
 passlib==1.7.1