diff --git a/requirements.txt b/requirements.txt
index 41c2419..1f569a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -76,7 +76,7 @@ MarkupSafe==1.1.1
 mistune==0.8.4
 murmurhash==1.0.2
 nanotime==0.5.2
-nbconvert==5.6.1
+nbconvert==6.5.1
 nbformat==5.0.7
 networkx==2.4
 nltk==3.5