diff --git a/requirements.txt b/requirements.txt
index 917d390..af8384d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,4 +34,4 @@ urllib3==1.24.1
 waitress==1.2.1
 web3==4.8.3
 websockets==6.0
-Werkzeug==0.15.1
+Werkzeug==0.15.3