diff --git a/requirements.txt b/requirements.txt
index bf2ad87..7982154 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ get==2019.4.13
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10.3
-lxml==4.4.1
+lxml==4.6.2
 MarkupSafe==1.1.1
 nose==1.3.7
 numpy==1.17.3