diff --git a/requirements.txt b/requirements.txt
index 1c507c1..452f3c4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ mistune==0.8.1
 nbconvert==5.3.1
 nbformat==4.4.0
 nltk==3.2.5
-notebook==5.2.1
+notebook==6.4.12
 numpy==1.13.3
 pandas==0.21.0
 pandocfilters==1.4.2