diff --git a/requirements.txt b/requirements.txt
index e8858e9..7ed0d3c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ matplotlib==2.1.0
 mistune==0.8
 more-itertools==3.2.0
 nameparser==0.5.3
-nbconvert==5.3.1
+nbconvert==6.5.1
 nbformat==4.4.0
 ndg-httpsclient==0.4.3
 nltk==3.2.5