diff --git a/requirements.txt b/requirements.txt
index 9f253e9..d0966ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ mistune==0.8.4
 more-itertools==7.2.0
 nbconvert==5.5.0
 nbformat==4.4.0
-notebook==6.0.0
+notebook==6.4.1
 numexpr==2.6.9
 numpy==1.16.4
 OpenFisca-Core==34.3.2