diff --git a/requirements.txt b/requirements.txt
index b270933..527ff09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,4 +28,4 @@ toolz==0.9.0
 urllib3==1.22
 web3==4.3.0
 websockets==4.0.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3