diff --git a/requirements.txt b/requirements.txt
index 4360121..80a2170 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -81,7 +81,7 @@ mpmath==1.0.0
 msgpack-python==0.4.8
 multipledispatch==0.4.9
 navigator-updater==0.1.0
-nbconvert==5.3.1
+nbconvert==6.3.0
 nbformat==4.4.0
 networkx==2.0
 nltk==3.4.5