diff --git a/nginx-wsgi-flask/flask/requirements.txt b/nginx-wsgi-flask/flask/requirements.txt
index f358d0a..948017e 100644
--- a/nginx-wsgi-flask/flask/requirements.txt
+++ b/nginx-wsgi-flask/flask/requirements.txt
@@ -1,2 +1,2 @@
-Flask==1.1.1
+Flask>=2.2.2
 gunicorn==20.0.4
\ No newline at end of file