diff --git a/requirements.txt b/requirements.txt
index 21cbba1..b543a46 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ MarkupSafe==1.1.1
 matplotlib==3.2.1
 mistune==0.8.4
 mritopng==2.2
-nbconvert==5.6.1
+nbconvert==6.5.1
 nbformat==5.0.5
 networkx==2.4
 nibabel==3.0.2