diff --git a/ChineseSegmentation/requirements.txt b/ChineseSegmentation/requirements.txt
index a3c8279..a4f5c8f 100644
--- a/ChineseSegmentation/requirements.txt
+++ b/ChineseSegmentation/requirements.txt
@@ -39,7 +39,7 @@ MarkupSafe==1.0
 matplotlib==2.0.0
 mistune==0.8.1
 msgpack-python==0.4.8
-nbconvert==5.2.1
+nbconvert==6.3.0
 nbformat==4.3.0
 notebook==5.7.8
 numpy==1.13.1