diff --git a/requirements.txt b/requirements.txt
index 172310846..afcf11a3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,6 @@ six==1.10.0
 toml==0.9.2
 tqdm==4.14.0
 troposphere>=1.9.0
-Werkzeug==0.12
+Werkzeug==0.15.3
 wheel==0.29.0
 wsgi-request-logger==0.4.6