diff --git a/requirements.txt b/requirements.txt
index c5ac5ae..0c12659 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ nbconvert==5.3.1
 nbformat==4.4.0
 nbval==0.9.1
 netCDF4==1.4.0
-notebook==5.6.0
+notebook==6.4.10
 numpy==1.15.0
 pandas==0.23.4
 pandocfilters==1.4.2