diff --git a/requirements.txt b/requirements.txt
index f134a71..0e653e1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ Markdown==2.2.0
 MarkupSafe==1.0
 matplotlib==2.0.2
 mistune==0.7.4
-nbconvert==5.2.1
+nbconvert==6.5.1
 nbformat==4.4.0
 numpy==1.13.0
 olefile==0.44