diff --git a/requirements.txt b/requirements.txt
index 7bfc206..8e9a8bd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -84,7 +84,7 @@ mpmath==1.0.0
 msgpack-python==0.5.6
 multipledispatch==0.5.0
 navigator-updater==0.2.1
-nbconvert==5.3.1
+nbconvert==6.3.0
 nbformat==4.4.0
 networkx==1.11
 nltk==3.3