diff --git a/requirements.txt b/requirements.txt
index 20b2a34..c34c966 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -104,7 +104,7 @@ mpmath==1.1.0
 msgpack==0.6.1
 multipledispatch==0.6.0
 navigator-updater==0.2.1
-nbconvert==5.6.0
+nbconvert==6.5.1
 nbformat==4.4.0
 networkx==2.3
 nltk==3.4.5