diff --git a/requirements.txt b/requirements.txt
index 08188da..63d2593 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,4 +14,4 @@ six==1.11.0
 tzlocal==1.5.1
 urllib3==1.24.1
 vine==1.2.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3