diff --git a/requirements.txt b/requirements.txt
index 8cb27e3..5b18867 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,4 +9,4 @@ kombu==4.0.2
 MarkupSafe==0.23
 pytz==2016.10
 vine==1.1.3
-Werkzeug==0.11.15
+Werkzeug==0.15.5