diff --git a/requirements.txt b/requirements.txt
index 02b1da7..0788fe7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ docutils==0.15.2
 Flask==1.1.1
 flask-marshmallow==0.10.1
 flask-cors==3.0.8
-gunicorn==20.0.4
+gunicorn==22.0.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.11.3