diff --git a/chapter5_volume/labs/flask-skeleton/requirements.txt b/chapter5_volume/labs/flask-skeleton/requirements.txt
index 32c7949..a2c2a30 100644
--- a/chapter5_volume/labs/flask-skeleton/requirements.txt
+++ b/chapter5_volume/labs/flask-skeleton/requirements.txt
@@ -22,5 +22,5 @@ python-editor==1.0.1
 six==1.10.0
 SQLAlchemy==1.0.14
 visitor==0.1.3
-Werkzeug==0.11.10
+Werkzeug==0.15.5
 WTForms==2.1