diff --git a/setup.py b/setup.py
index 166eb00..41a1e26 100644
--- a/setup.py
+++ b/setup.py
@@ -13,5 +13,5 @@
                         'isodate==0.5.0',
                         'rdflib==4.2.0',
                         'rdflib-jsonld==0.2',
-                        'werkzeug==0.9.4']
+                        'werkzeug==0.15.3']
      )