diff --git a/requirements.txt b/requirements.txt
index 05c6126..8f59f4a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ MarkupSafe==1.0
 mistune==0.7.4
 nbconvert==5.2.1
 nbformat==4.3.0
-notebook==5.0.0
+notebook==6.4.12
 pandocfilters==1.4.1
 path.py==10.3.1
 pathlib2==2.3.0