diff --git a/requirements.txt b/requirements.txt
index a279c60..cb1f3ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,4 +51,4 @@ toolz==0.9.0
 urllib3==1.23
 web3==4.2.1
 websockets==6.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3