diff --git a/requirements.txt b/requirements.txt
index 655b9ec..a7e07c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ MarkupSafe==1.1.1
 mistune==0.8.4
 nbconvert==5.5.0
 nbformat==4.4.0
-notebook==6.0.0
+notebook==6.4.12
 pandocfilters==1.4.2
 parsel==1.5.1
 parso==0.5.1