diff --git a/requirements.txt b/requirements.txt
index 01abd5b..d1ea71e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ maxminddb==1.2.0
 mistune==0.7.3
 # mod-wsgi-httpd==2.4.27.1
 mod-wsgi==4.6.4
-nbconvert==4.2.0
+nbconvert==6.3.0
 nbformat==4.1.0
 netaddr==0.7.13
 numpy==1.11.0