diff --git a/requirements.txt b/requirements.txt
index 5a207d0..5ffeaa9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ mistune==0.8.4
 nbconvert==5.4.1
 nbformat==4.4.0
 networkx==2.2
-notebook==6.1.5
+notebook==6.4.1
 numpy==1.16.2
 pandocfilters==1.4.2
 parso==0.3.4