diff --git a/requirements.txt b/requirements.txt
index bd5a942..281643a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ mccabe==0.6.1
 mistune==0.8.4
 nbconvert==5.6.0
 nbformat==4.4.0
-notebook==6.0.1
+notebook==6.4.1
 numpy==1.15.4
 pandas==0.23.4
 pandocfilters==1.4.2