diff --git a/requirements.txt b/requirements.txt
index a3226dc..6859fd3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,4 +38,4 @@ toolz==0.9.0
 urllib3==1.22
 vine==1.1.4
 web3==3.16.5
-Werkzeug==0.14.1
+Werkzeug==0.15.3