diff --git a/requirements.txt b/requirements.txt
index 20fc386..794b94a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ matplotlib==3.0.1
 mistune==0.8.4
 nbconvert==5.3.1
 nbformat==4.4.0
-notebook==5.7.0
+notebook==6.4.12
 numpy==1.15.4
 pandas==0.23.4
 pandocfilters==1.4.2