diff --git a/requirements.txt b/requirements.txt
index 5d67e8c..b1441c9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,6 @@ marshmallow-sqlalchemy==0.14.1
 SQLAlchemy==1.3.0
 pyodbc==4.0.24
 itsdangerous==0.24
-Werkzeug==0.15.3
+Werkzeug==0.15.5
 Jinja2==2.10.1