diff --git a/2017/solutions/rllchatbot/requirements.txt b/2017/solutions/rllchatbot/requirements.txt
index d3da83a50..139845da8 100644
--- a/2017/solutions/rllchatbot/requirements.txt
+++ b/2017/solutions/rllchatbot/requirements.txt
@@ -70,7 +70,7 @@ nbformat==4.3.0
 ndg-httpsclient==0.4.2
 nltk==3.2.5
 nose==1.3.1
-notebook==5.0.0
+notebook==6.4.12
 numexpr==2.2.2
 numpy==1.13.3
 openpyxl==1.7.0