diff --git a/requirements.txt b/requirements.txt
index 467a174..a9551f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ mistune==0.8.4
 more-itertools==4.3.0
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.0
+notebook==6.4.12
 numpy==1.15.4
 packaging==19.0
 pandas==0.23.4