diff --git a/requirements.txt b/requirements.txt
index c52024f7..c0fca7bd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ MarkupSafe==0.23
 matplotlib==1.5.1
 mistune==0.8.3
 mock==2.0.0
-nbconvert==5.4.0
+nbconvert==6.3.0
 nbformat==4.4.0
 networkx==1.11
 nltk==3.1