diff --git a/requirements.txt b/requirements.txt
index 54e0168..77274cc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,5 +22,5 @@ six==1.12.0
 twilio==6.21.0
 typed-ast==1.1.0
 urllib3==1.24.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 wrapt==1.10.11