diff --git a/requirements.txt b/requirements.txt
index 4c3ed7a..b53da0c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,4 +33,4 @@ requests==2.18.4
 six==1.11.0
 testfixtures==5.4.0
 urllib3==1.22
-Werkzeug==0.14.1
+Werkzeug==0.15.3