diff --git a/nginx-wsgi-flask/flask/requirements.txt b/nginx-wsgi-flask/flask/requirements.txt
index f358d0a..9ad12b8 100644
--- a/nginx-wsgi-flask/flask/requirements.txt
+++ b/nginx-wsgi-flask/flask/requirements.txt
@@ -1,2 +1,2 @@
 Flask==1.1.1
-gunicorn==20.0.4
\ No newline at end of file
+gunicorn==23.0.0
\ No newline at end of file