diff --git a/book.toml b/book.toml
index 1ab1e05..6e79fdf 100644
--- a/book.toml
+++ b/book.toml
@@ -1,6 +1,6 @@
 [book]
 authors = ["hmtsai","sutdy-area-cn-developers"]
-language = "cn"
+language = "en"
 multilingual = false
 src = "src"
 title = "Study Area CN"