diff --git a/requirements.txt b/requirements.txt
index b084715..58da2c0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ mistune==0.8.4
 mmdnn==0.2.5
 mnist==0.2.2
 mock==2.0.0
-nbconvert==5.4.1
+nbconvert==6.5.1
 nbformat==4.4.0
 nose==1.3.7
 notebook==5.7.8