diff --git a/ibm-recommender/requirements.txt b/ibm-recommender/requirements.txt
index 591d78f..99fca44 100644
--- a/ibm-recommender/requirements.txt
+++ b/ibm-recommender/requirements.txt
@@ -46,7 +46,7 @@ mpld3==0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 nltk==3.3
-notebook==5.5.0
+notebook==6.4.10
 numexpr==2.6.5
 numpy==1.14.3
 pandas==0.23.0