diff --git a/requirements.txt b/requirements.txt
index b3453a2..536f09b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,4 @@ MarkupSafe==1.0
 packaging==16.8
 pyparsing==2.2.0
 six==1.10.0
-Werkzeug==0.11.15
+Werkzeug==0.15.3