diff --git a/requirements.txt b/requirements.txt
index 571b4d7..9d4eef3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ mistune==0.8.3
 #mkl-fft==1.0.0
 #mkl-random==1.0.1
 more-itertools==4.1.0
-nbconvert==5.3.1
+nbconvert==6.3.0
 nbformat==4.4.0
 ndjson==0.1.0
 networkx==2.2