diff --git a/requirements.txt b/requirements.txt
index 5d58b07..feb2497 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ click~=7.1.2
 flask==1.1.4
 jinja2==2.11.3
 flask-pyoidc==1.3.0
-gunicorn==20.0.4
+gunicorn==23.0.0
 markupsafe==2.0.1
 paramiko==2.11.0
 proxmoxer==1.1.1