diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7518248..45c93b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ 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).
 
+## [1.5.6](https://github.com/zookzook/elixir-mongodb-driver/compare/v1.5.5...v1.5.6) (2025-08-07)
+
+
+### Bug Fixes
+
+* improved the spec for function `find_one_and_delete` thanks to csrl ([b868998](https://github.com/zookzook/elixir-mongodb-driver/commit/b8689980b738cdafedb84510dfc0220c7fcad55f))
+
 ## [1.5.5](https://github.com/zookzook/elixir-mongodb-driver/compare/v1.5.4...v1.5.5) (2025-07-07)
 
 
diff --git a/mix.exs b/mix.exs
index 1e132e6..cf61468 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,7 +2,7 @@ defmodule Mongodb.Mixfile do
   use Mix.Project
 
   @source_url "https://github.com/zookzook/elixir-mongodb-driver"
-  @version "1.5.5"
+  @version "1.5.6"
 
   def project() do
     [