diff --git a/requirements.txt b/requirements.txt
index 922f869..03ac631 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ jupyter-core==4.3.0
 MarkupSafe==1.0
 matplotlib==2.0.0
 mistune==0.7.4
-nbconvert==5.1.1
+nbconvert==6.5.1
 nbformat==4.3.0
 nltk==3.2.4
 notebook==5.0.0