diff --git a/04_flask/requirements.txt b/04_flask/requirements.txt
index 8c7b2d8..e842d9f 100644
--- a/04_flask/requirements.txt
+++ b/04_flask/requirements.txt
@@ -1,4 +1,4 @@
-Flask==1.1.2
+Flask==2.3.2
 Werkzeug==2.2.3
 Flask_Login==0.5.0
 click==7.1.2