diff --git a/book/chapter-02-the-package-based.md b/book/chapter-02-the-package-based.md
index 1c56d159..e57b511a 100644
--- a/book/chapter-02-the-package-based.md
+++ b/book/chapter-02-the-package-based.md
@@ -7,12 +7,6 @@ General Bots project is like to split the work on several packages if needed and
 on a package at once or even share the work with collegues, agencies or development
 companies to more advanced package building. Composite packages on GeneralBots:
 
- .gbai
- .gbapp
- .gbot
- .gbtheme
- .gbkb
- .gblib
 
 ![print packages](https://user-images.githubusercontent.com/65977273/94712159-7662fb80-031f-11eb-8217-1c0507bfe5d5.png)