diff --git a/requirements.txt b/requirements.txt
index ecbd774..50873f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ nbconvert==5.6.1
 nbformat==5.0.4
 nc-time-axis==1.2.0
 netCDF4==1.5.3
-notebook==6.0.3
+notebook==6.4.1
 numpy==1.18.1
 olefile==0.46
 OWSLib==0.19.1