diff --git a/requirements.txt b/requirements.txt
index 77df8f9..683ba00 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ MarkupSafe==1.0
 matplotlib==2.1.0
 mistune==0.8.1
 mock==2.0.0
-nbconvert==5.3.1
+nbconvert==6.3.0
 nbformat==4.4.0
 nltk==3.2.5
 notebook==5.2.1