diff --git a/requirements.txt b/requirements.txt
index 442daa4..db96869 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ MarkupSafe==0.23
 WTForms==2.0.1
 WTForms-Dynamic-Fields==0.1a2
 WebOb==1.4
-Werkzeug==0.9.6
+Werkzeug==0.15.3
 argparse==1.2.1
 itsdangerous==0.24
 py==1.4.22