diff --git a/requirements.txt b/requirements.txt
index f44006e..17d5e27 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,5 +12,5 @@ babel==2.3.4
 psycopg2==2.6.1
 
 # For development tools
-Werkzeug==0.11.9
+Werkzeug==0.15.5
 django-extensions==1.6.7