diff --git a/requirements.txt b/requirements.txt
index e0bd1ae..ff6215d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ MarkupSafe==0.18
 PyMySQL==0.6.6
 SQLAlchemy==0.8.4
 WTForms==1.0.5
-Werkzeug==0.9.6
+Werkzeug==0.15.3
 alembic==0.6.2
 blinker==1.3
 itsdangerous==0.23