diff --git a/requirements.txt b/requirements.txt
index ca86a19..057d8df 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ mccabe==0.6.1
 mistune==0.8.4
 more-itertools==8.0.2
 mpi4py==3.0.3
-nbconvert==5.6.1
+nbconvert==6.3.0
 nbformat==4.4.0
 notebook==6.0.2
 numpy==1.18.0