diff --git a/requirements.txt b/requirements.txt
index 8c758e9..d8acfac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,4 +24,4 @@ six==1.10.0
 SQLAlchemy==1.1.10
 SQLAlchemy-Utils==0.32.14
 visitor==0.1.3
-Werkzeug==0.12.2
+Werkzeug==0.15.5