diff --git a/requirements.txt b/requirements.txt
index 0382aa2..63ea3e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Flask==0.9
+Flask==2.2.5
 Jinja2==2.6
 Werkzeug==0.8.3
 wsgiref==0.1.2