diff --git a/appweb/requirements.txt b/appweb/requirements.txt
index 9abaab0..dcb9d7b 100644
--- a/appweb/requirements.txt
+++ b/appweb/requirements.txt
@@ -72,7 +72,7 @@ matplotlib==2.0.0
 mistune==0.7.3
 mpmath==0.19
 multipledispatch==0.4.9
-nbconvert==4.2.0
+nbconvert==6.5.1
 nbformat==4.2.0
 networkx==1.11
 nose==1.3.7