diff --git a/requirements.txt b/requirements.txt
index e5d7beb0..33b12b8f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,4 +55,4 @@ simplejson==3.10.0
 six==1.10.0
 vine==1.1.3
 WTForms==2.1
-Werkzeug==0.12.2
+Werkzeug==0.11.15