diff --git a/requirements.txt b/requirements.txt
index 2a57acb..33e14b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,4 +40,4 @@ spidev==3.2
 twython==3.1.2
 urllib3==1.9.1
 websocket-client==0.37.0
-Werkzeug==0.9.6
+Werkzeug==0.15.3