diff --git a/requirements.txt b/requirements.txt
index b422ba4..ddf7840 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 PyJWT==1.4.2
 PyYAML==3.12
-Werkzeug==0.9.4
+Werkzeug==0.15.5
 argparse==1.4.0
 clastic==0.4.3
 mwoauth==0.2.8