diff --git a/requirements.txt b/requirements.txt
index 2f8c971..a969d34 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ MarkupSafe==1.1.1
 mistune==0.8.4
 nbconvert==5.6.0
 nbformat==4.4.0
-notebook==6.1.5
+notebook==6.4.1
 pandocfilters==1.4.2
 parso==0.5.1
 pickleshare==0.7.5