diff --git a/requirements.txt b/requirements.txt
index 314a5b0..66bdaa6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ flower==0.9.2
 gunicorn==19.9.0
 idna==2.7
 kombu==3.0.37
-lxml==4.2.5
+lxml==4.6.5
 psycopg2==2.7.5
 pycparser==2.19
 pyOpenSSL==18.0.0