diff --git a/requirements.txt b/requirements.txt
index 37a9cc2..b70c5e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,4 @@ packaging==16.8
 pyparsing==2.1.10
 six==1.10.0
 urllib3==1.20
-Werkzeug==0.11.15
+Werkzeug==0.15.3