diff --git a/requirements.txt b/requirements.txt
index 26ae68d..bbc56d2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ mpmath==1.0.0
 mypy==0.610
 nbconvert==5.3.1
 nbformat==4.4.0
-notebook==5.5.0
+notebook==6.4.12
 numpy==1.14.5
 oauthlib==2.0.6
 PAM==0.4.2