diff --git a/requirements.txt b/requirements.txt
index 6257e9f..d9d780b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,4 +32,4 @@ rsa==3.4.2
 six==1.10.0
 urllib3==1.21.1
 WebOb==1.6.1
-Werkzeug==0.12.2
+Werkzeug==0.15.3