diff --git a/requirements.txt b/requirements.txt
index d27a47b..df26bee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,4 +18,4 @@ requests==2.18.4
 six==1.11.0
 urllib3==1.22
 watson-developer-cloud==1.0.0
-Werkzeug==0.12.2
+Werkzeug==0.15.3