diff --git a/requirements.txt b/requirements.txt
index 599600f..6a8800b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ MarkupSafe==1.1.1
 mistune==0.8.4
 nbconvert==5.5.0
 nbformat==4.4.0
-notebook==5.7.8
+notebook==6.4.12
 openapi-codec==1.3.2
 packaging==19.0
 pandocfilters==1.4.2