diff --git a/requirements.txt b/requirements.txt
index 4abdbcb..b9108bf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -66,7 +66,7 @@ matplotlib==1.4.3
 menuinst==1.2.1
 mistune==0.7.1
 multipledispatch==0.4.8
-nbconvert==4.0.0
+nbconvert==6.3.0
 nbformat==4.0.1
 networkx==1.10
 nltk==3.1