diff --git a/requirements.txt b/requirements.txt
index 1576fc8..7c52435 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -108,7 +108,7 @@ mpmath==1.1.0
 msgpack==0.6.1
 multipledispatch==0.6.0
 navigator-updater==0.2.1
-nbconvert==5.6.1
+nbconvert==6.5.1
 nbformat==5.0.4
 networkx==2.4
 nltk==3.4.5