diff --git a/projects/midcurvenn/requirements.txt b/projects/midcurvenn/requirements.txt
index 9c996bdc..254627e1 100644
--- a/projects/midcurvenn/requirements.txt
+++ b/projects/midcurvenn/requirements.txt
@@ -43,7 +43,7 @@ mkl-service==2.0.2
 mock==3.0.5
 nbconvert==5.5.0
 nbformat==4.4.0
-notebook==6.0.0
+notebook==6.4.12
 numpy==1.16.4
 olefile==0.46
 pandas==0.25.0