diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6d27fd..4e1ff3a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@ 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] - 2025-05-15
+### Added
+- DELETE book endpoint (`DELETE /api/books/{id}`)
+- `DeleteBook` method in `controllers/book_controller.go`
+- Route registration for DELETE requests in `routes/routes.go`
+- Test for `DeleteBook` to verify proper functionality in deleting a book
+
 ## [1.0.0] - 2025-05-14
 ### Added
 - Initial release of the Book API