diff --git a/requirements.txt b/requirements.txt
index 9e90d54..c767eaa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,7 +39,7 @@ matplotlib==2.0.2
 mccabe==0.6.1
 mistune==0.7.4
 more-itertools==2.2
-nbconvert==5.2.1
+nbconvert==6.5.1
 nbformat==4.4.0
 networkx==1.11
 nose==1.3.7