diff --git a/requirements.txt b/requirements.txt
index 7805b35c..1da597ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,6 +3,6 @@ werkzeug==0.15.5
 Flask==1.0
 requests==2.20.0
 click==7.0
-gunicorn==20.0.1
+gunicorn==19.9.0
 lxml
 redis