diff --git a/requirements.txt b/requirements.txt
index 5051e49..86be411 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ https://github.com/mozilla-iam/Flask-pyoidc/archive/v1.0.0.tar.gz
 Flask-SSLify==0.1.5
 funcsigs==1.0.2
 future==0.18.3
-gunicorn==20.1.0
+gunicorn==22.0.0
 idna==2.10
 ipaddress==1.0.23
 itsdangerous==1.1.0