diff --git a/patterns/1-simple_architectures/4-ecs/application/requirements.txt b/patterns/1-simple_architectures/4-ecs/application/requirements.txt
index aa777f7..7f62a93 100644
--- a/patterns/1-simple_architectures/4-ecs/application/requirements.txt
+++ b/patterns/1-simple_architectures/4-ecs/application/requirements.txt
@@ -1,3 +1,3 @@
 flask==3.1.3
-werkzeug==3.1.6
+werkzeug==3.1.9
 gunicorn==22.0.0