diff --git a/requirements.txt b/requirements.txt
index 8c32751..4da96eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -121,7 +121,7 @@ mpmath==1.1.0
 msgpack==0.6.1
 multipledispatch==0.6.0
 navigator-updater==0.2.1
-nbconvert==5.5.0
+nbconvert==6.5.1
 nbformat==4.4.0
 netCDF4==1.4.2
 networkx==2.3