diff --git a/requirements.txt b/requirements.txt
index 8288319..4e48f9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ matplotlib==3.0.2
 mistune==0.8.4
 more-itertools==4.3.0
 mpi4py==3.0.0
-nbconvert==5.4.0
+nbconvert==6.3.0
 nbformat==4.4.0
 notebook==5.7.2
 numpy==1.15.4