diff --git a/sentiment-rnn/requirements.txt b/sentiment-rnn/requirements.txt
index 0325252964..aa832d30ec 100644
--- a/sentiment-rnn/requirements.txt
+++ b/sentiment-rnn/requirements.txt
@@ -18,7 +18,7 @@ MarkupSafe==1.0
 mistune==0.8.1
 nbconvert==5.1.1
 nbformat==4.3.0
-notebook==4.4.1
+notebook==6.4.12
 numpy==1.12.1
 packaging==16.8
 pandocfilters==1.4.1