diff --git a/requirements.txt b/requirements.txt
index ffde872..1a5ff87 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -100,7 +100,7 @@ more-itertools==5.0.0
 mpmath==1.1.0
 msgpack==0.6.1
 multipledispatch==0.6.0
-nbconvert==5.4.1
+nbconvert==6.5.1
 nbformat==4.4.0
 networkx==2.2
 nltk==3.4