diff --git a/requirements.txt b/requirements.txt
index 092e1c8..2d0ba2b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -91,7 +91,7 @@ more-itertools==7.2.0
 mpmath==1.1.0
 msgpack==0.6.1
 multipledispatch==0.6.0
-nbconvert==5.6.1
+nbconvert==6.5.1
 nbformat==4.4.0
 networkx==2.4
 nltk==3.4.5