diff --git a/requirements.txt b/requirements.txt
index a10060b..ab086ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.2
 mistune==0.8.3
-nbconvert==5.3.1
+nbconvert==6.5.1
 nbformat==4.4.0
 nltk==3.3
 notebook==5.6.0