diff --git a/requirements.txt b/requirements.txt
index 1d8b4ec..035dfc9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ matplotlib==3.0.2
 mistune==0.8.4
 mkl-fft==1.0.6
 more-itertools==5.0.0
-nbconvert==5.3.1
+nbconvert==6.5.1
 nbformat==4.4.0
 networkx==2.2
 notebook==5.7.4