diff --git a/requirements.txt b/requirements.txt
index cccb1df..fcf664d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ Flask-HTTPAuth
 Flask
 Flask-Login
 Flask-SQLAlchemy
-gunicorn==19.10.0
+gunicorn==22.0.0
 itsdangerous==0.24
 Jinja2
 MarkupSafe==1.0