diff --git a/requirements.txt b/requirements.txt
index a38f773..b5a7a1d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -95,7 +95,7 @@ more-itertools==6.0.0
 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