diff --git a/requirements.txt b/requirements.txt
index ce83403..270654c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ MarkupSafe==1.0
 mistune==0.7.4
 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