diff --git a/book.json b/book.json
index 646e4a1..207085e 100644
--- a/book.json
+++ b/book.json
@@ -2,7 +2,7 @@
 	"gitbook": "2.x",
 	"title": "Go语言高级编程",
 	"description": "Go语言高级编程",
-	"language": "zh-cn",
+	"language": "zh-hans",
 
 	"structure": {
 		"readme": "preface.md"