diff --git a/requirements.txt b/requirements.txt
index aff1e39..26a2aaf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,4 @@ MarkupSafe==1.0
 pytz==2017.2
 requests==2.18.4
 urllib3==1.22
-Werkzeug==0.12.2
+Werkzeug==0.15.3