diff --git a/requirements.txt b/requirements.txt
index 950df89..1c766c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ MarkupSafe==1.0
 mistune==0.7.4
 nbconvert==5.2.1
 nbformat==4.4.0
-notebook==5.0.0
+notebook==6.4.12
 olefile==0.44
 pandocfilters==1.4.2
 pexpect==4.2.1