diff --git a/requirements.txt b/requirements.txt
index 01c2489..8da7b01 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,4 +15,4 @@ python-dateutil==2.7.5
 pytz==2018.7
 RPi.GPIO==0.6.5
 six==1.12.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3