diff --git a/submission/requirements.txt b/submission/requirements.txt
index 8480463..46bd721 100644
--- a/submission/requirements.txt
+++ b/submission/requirements.txt
@@ -83,7 +83,7 @@ mpmath==0.19
 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==1.11
 nltk==3.4.5