diff --git a/requirements.txt b/requirements.txt
index e762760..1a12291 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ Flask==1.0
 itsdangerous==0.24
 Jinja2==2.8
 MarkupSafe==0.23
-Werkzeug==0.15.3
+Werkzeug==0.15.5
 flask-sqlalchemy
 psycopg2
 slackclient