diff --git a/集成实用夹/书籍与文档/readme.md b/集成实用夹/书籍与文档/readme.md
index 971aa99..5b6a7d4 100644
--- a/集成实用夹/书籍与文档/readme.md
+++ b/集成实用夹/书籍与文档/readme.md
@@ -12,6 +12,7 @@
 
 ### 电子书
 
+* https://ctext.org/zhs
 * https://www.owllook.net/
 * https://itpanda.net/book
 * https://epubw.com/102850.html