diff --git a/requirements.txt b/requirements.txt
index c9a4935..f3527ad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ MarkupSafe==1.1.0
 mistune==0.8.4
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.2
+notebook==6.4.12
 pandocfilters==1.4.2
 parso==0.3.1
 pdfkit==0.6.1