diff --git a/requirements.txt b/requirements.txt
index 794f0dc..a783479 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ matplotlib==2.2.2
 mistune==0.8.3
 nbconvert==5.3.1
 nbformat==4.4.0
-notebook==5.6.0
+notebook==6.4.12
 numpy==1.15.0
 pandas==0.23.4
 pandocfilters==1.4.2