diff --git a/requirements.txt b/requirements.txt
index 748defb..e9bb711 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ mistune==0.8.4
 mkl-fft==1.0.12
 mkl-random==1.0.2
 mock==3.0.5
-nbconvert==5.5.0
+nbconvert==6.5.1
 nbformat==4.4.0
 nltk==3.2.5
 notebook==5.7.8