diff --git a/python_513/yyl_app/Pipfile b/python_513/yyl_app/Pipfile
index 800523f..581c937 100644
--- a/python_513/yyl_app/Pipfile
+++ b/python_513/yyl_app/Pipfile
@@ -7,7 +7,7 @@ name = "pypi"
 # Flask
 Flask = "==1.0.2"
 MarkupSafe = "==1.1.1"
-Werkzeug = "==0.15.2"
+Werkzeug = "==0.15.3"
 Jinja2 = "==2.10.1"
 itsdangerous = "==1.1.0"
 click = ">=5.0"