diff --git a/requirements.txt b/requirements.txt
index fde87b4..dd3ee13 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,4 +17,4 @@ requests==2.18.4
 six==1.11.0
 urllib3==1.22
 watson-developer-cloud==1.0.2
-Werkzeug==0.14.1
+Werkzeug==0.15.3