diff --git a/requirements.txt b/requirements.txt
index e5dc43f..3ae6c41 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ idna==2.6
 itsdangerous==0.24
 Jinja2==2.10
 kiwisolver==1.0.1
-lxml==4.2.1
+lxml==4.6.2
 MarkupSafe==1.0
 numpy==1.14.2
 PyMySQL==0.8.0