diff --git a/requirements.txt b/requirements.txt
index 7c8437b..3ff14c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ matplotlib==2.2.2
 mccabe==0.6.1
 mistune==0.8.3
 more-itertools==7.2.0
-nbconvert==5.3.1
+nbconvert==6.5.1
 nbformat==4.4.0
 nlopt
 notebook>=5.7.8