diff --git a/requirements.txt b/requirements.txt
index 081acd7..5293263 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ mistune==0.8.4
 mock==2.0.0
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.4
+notebook==6.4.12
 numpy==1.15.4
 pandocfilters==1.4.2
 parso==0.3.1