diff --git a/ChineseSegmentation/requirements.txt b/ChineseSegmentation/requirements.txt
index a3c8279..b67301e 100644
--- a/ChineseSegmentation/requirements.txt
+++ b/ChineseSegmentation/requirements.txt
@@ -41,7 +41,7 @@ mistune==0.8.1
 msgpack-python==0.4.8
 nbconvert==5.2.1
 nbformat==4.3.0
-notebook==5.7.8
+notebook==6.4.12
 numpy==1.13.1
 ordereddict==1.1
 packaging==16.8