diff --git a/requirement.txt b/requirement.txt
index fa044a1..8a7ccb3 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -25,7 +25,7 @@ MarkupSafe==1.1.0
 matplotlib==3.0.2
 mistune==0.8.4
 mpmath==1.1.0
-nbconvert==5.4.0
+nbconvert==6.5.1
 nbformat==4.4.0
 nltk==3.3
 notebook>=5.7.8