diff --git a/apps/securetrails-vulnerable/requirements.txt b/apps/securetrails-vulnerable/requirements.txt
index 298b6ec..10cb748 100644
--- a/apps/securetrails-vulnerable/requirements.txt
+++ b/apps/securetrails-vulnerable/requirements.txt
@@ -1,4 +1,4 @@
-Flask==1.1.0
+Flask==3.1.3
 requests==2.24.0
 SQLAlchemy==1.3.0
 Werkzeug==1.0.0