diff --git a/source/chapter2/13_Inheritance.md b/source/chapter2/13_Inheritance.md
index 6a5b8712..fea5da01 100755
--- a/source/chapter2/13_Inheritance.md
+++ b/source/chapter2/13_Inheritance.md
@@ -11,6 +11,9 @@
 > 2.2
 > 校对：[SketchK](https://github.com/SketchK) 2016-05-13  
 > 3.0.1，shanks，2016-11-13
+
+> 4.0
+> 校对：[kemchenj](https://kemchenj.github.io/) 2017-09-21
 
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