diff --git a/requirements.txt b/requirements.txt
index ad3e404..95046cc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,5 +4,5 @@ Jinja2==2.8
 MarkupSafe==0.23
 protobuf==3.0.0a3
 titlecase==0.7.2
-Werkzeug==0.10.4
+Werkzeug==0.15.3
 wheel==0.26.0