diff --git a/requirements.txt b/requirements.txt
index 7f5ef54..b769d5f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -104,7 +104,7 @@ more-itertools==4.3.0
 mpmath==1.1.0
 msgpack==0.5.6
 multipledispatch==0.6.0
-nbconvert==5.4.0
+nbconvert==6.3.0
 nbformat==4.4.0
 networkx==2.2
 nltk==3.4