diff --git a/iOS/server/requirements.txt b/iOS/server/requirements.txt
index 65f0208..940955c 100644
--- a/iOS/server/requirements.txt
+++ b/iOS/server/requirements.txt
@@ -4,4 +4,4 @@ itsdangerous==0.24
 psycopg2==2.7.3.2
 Flask==1.0.2
 Jinja2==2.10
-Werkzeug==0.14.1
+Werkzeug==0.15.5