diff --git a/requirements.txt b/requirements.txt
index fafa0a2..f2b8700 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ future==0.16.0
 gunicorn==19.8.1
 idna==2.7
 kombu==4.2.1
-lxml==4.2.2
+lxml==4.2.3
 numpy==1.14.5
 oauthlib==2.1.0
 olefile==0.45.1