diff --git a/Starter Apps/REST-APIs/02 - Flask RESTful/code/requirements.txt b/Starter Apps/REST-APIs/02 - Flask RESTful/code/requirements.txt
index 4c80d89..bfc4f13 100644
--- a/Starter Apps/REST-APIs/02 - Flask RESTful/code/requirements.txt	
+++ b/Starter Apps/REST-APIs/02 - Flask RESTful/code/requirements.txt	
@@ -84,7 +84,7 @@ nbformat==4.4.0
 networkx==2.1
 nltk==3.2.5
 nose==1.3.7
-notebook==5.4.0
+notebook==6.4.12
 numba==0.36.2
 numexpr==2.6.4
 numpy==1.14.0