diff --git a/requirements.txt b/requirements.txt
index 0e555c3..126c170 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ idna==2.8
 itoolkit==1.5.1
 itsdangerous==1.1.0
 Jinja2==2.10
-lxml==4.2.1
+lxml==4.6.3
 MarkupSafe==1.0
 numpy==1.14.2
 pandas==0.22.0