diff --git a/requirements.txt b/requirements.txt
index ae6a4b5..f4eb8b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ more-itertools==5.0.0
 nbconvert==5.4.0
 nbdime==1.0.4
 nbformat==4.4.0
-notebook==5.7.4
+notebook==6.4.12
 pandocfilters==1.4.2
 parso==0.3.1
 pexpect==4.6.0