diff --git a/requirements.txt b/requirements.txt
index 301dbfa..09e1d1b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -113,7 +113,7 @@ uritemplate==3.0.0
 urllib3==1.23
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 win-inet-pton==1.0.1
 wincertstore==0.2
 wrapt==1.10.11