diff --git a/requirements.txt b/requirements.txt
index b3530cc..1f64896 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,4 +16,4 @@ six==1.11.0
 SQLAlchemy==1.0.8
 strict-rfc3339==0.5
 websocket-client==0.32.0
-Werkzeug==0.11.3
+Werkzeug==0.15.3