diff --git a/nginx-flask-mysql/backend/requirements.txt b/nginx-flask-mysql/backend/requirements.txt
old mode 100755
new mode 100644
index 924a5fd..971d2f5
--- a/nginx-flask-mysql/backend/requirements.txt
+++ b/nginx-flask-mysql/backend/requirements.txt
@@ -1,2 +1,2 @@
-Flask==2.0.1
+Flask==2.2.5
 mysql-connector==2.2.9