diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb398675..429db22e 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).
 
+## [1.4.0](https://github.com/zookzook/elixir-mongodb-driver/compare/v1.2.1...v1.4.0) (2024-02-10)
+
+
+### Miscellaneous Chores
+
+* release 1.2.1 ([0ef1482](https://github.com/zookzook/elixir-mongodb-driver/commit/0ef14829361bde236cfc054d774a3a51d0abea29))
+
 ## [1.2.1](https://github.com/zookzook/elixir-mongodb-driver/compare/v1.2.0...v1.2.1) (2023-11-26)
 
 
diff --git a/mix.exs b/mix.exs
index 149a407d..7cdbaaa9 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 "1.2.1"
+  @version "1.4.0"
 
   def project() do
     [