diff --git a/uk-schools-cluster-analysis/requirements.txt b/uk-schools-cluster-analysis/requirements.txt
index 2587759..7327bed 100644
--- a/uk-schools-cluster-analysis/requirements.txt
+++ b/uk-schools-cluster-analysis/requirements.txt
@@ -28,4 +28,4 @@ six==1.11.0
 sklearn==0.0                                                                                                                              
 traitlets==4.3.2                                                                                                                          
 urllib3==1.22                                                                                                                             
-Werkzeug==0.14.1   
+Werkzeug==0.15.3