diff --git a/docker/coref/app/requirements.txt b/docker/coref/app/requirements.txt
index 8cd2880..62d5435 100644
--- a/docker/coref/app/requirements.txt
+++ b/docker/coref/app/requirements.txt
@@ -1,6 +1,6 @@
 Flask==0.11.1
 Flask-RESTful==0.3.5
-Werkzeug==0.10.4
+Werkzeug==0.15.5
 future==0.16.0
 jsonpickle==0.9.4
 numpy==1.16.4