diff --git a/requirements.txt b/requirements.txt
index 7a533ec..ac2e530 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,5 +18,5 @@ requests==2.13.0
 six==1.10.0
 tornado==4.4.3
 websockets==8.0.2
-Werkzeug==0.12.1
+Werkzeug==0.15.3
 yarl==0.10.0