diff --git a/requirements.txt b/requirements.txt
index 72e5558..974c0d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,4 @@ Jinja2==2.10.1
 MarkupSafe==0.23
 nltk==3.2.1
 psycopg2==2.6.1
-Werkzeug==0.11.1
+Werkzeug==0.15.3