diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6d27fd..3115581 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.1.0] - Unreleased
+
+### Added
+- Implemented `DeleteBook` function in the `book_controller.go` to handle book deletions.
+- Added route for deleting a book (`DELETE /api/books/:id`) in `routes.go`.
+- Introduced tests for the `DeleteBook` function in `book_test.go`, including:
+   - Test to confirm successful book deletion.
+   - Test for handling the deletion of a non-existent book.
+
 ## [1.0.0] - 2025-05-14
 ### Added
 - Initial release of the Book API