diff --git a/requirements.txt b/requirements.txt
index 2d67f24..ef82d43 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ matplotlib==3.0.1
 mistune==0.8.4
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.0
+notebook==6.4.12
 numpy==1.15.3
 packaging==18.0
 pandocfilters==1.4.2