diff --git a/docs/en/tutorials/book-store-with-abp-suite/index.md b/docs/en/tutorials/book-store-with-abp-suite/index.md
index 6add9dfadf..285e2cca50 100644
--- a/docs/en/tutorials/book-store-with-abp-suite/index.md
+++ b/docs/en/tutorials/book-store-with-abp-suite/index.md
@@ -32,7 +32,8 @@ This tutorial is organized as the following parts:
 - [Part 1: Creating the Solution](part-01.md),
 - [Part 2: Creating the Books](part-02.md)
 - [Part 3: Creating the Authors](part-03.md)
-- [Part 4: Customizing the Generated Code](part-04.md)
+- [Part 4: Book to Author Relation](part-04.md)
+- [Part 5: Customizing the Generated Code](part-05.md)
 
 ### Download the Source Code