diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ef6ed38..6496a2f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ 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).
 
+## [1.4.3] - 2021-03-05
+### Changed
+- Deque<T>.operator[int] returns reference
+### Removed
+- PriorityQueue<TKey, TValue> is obsolete in .NET 6 or newer
+
 ## [1.4.2] - 2021-02-16
 ### Changed
 - Avoid using List<T>
diff --git a/Directory.Build.props b/Directory.Build.props
index 1dcc8f5b..b3126e8a 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -7,8 +7,8 @@
     <RepositoryUrl>https://github.com/naminodarie/ac-library-csharp</RepositoryUrl>
     <PackageReleaseNotes>https://github.com/naminodarie/ac-library-csharp/blob/master/CHANGELOG.md</PackageReleaseNotes>
 
-    <Version>1.4.2</Version>
-    <AssemblyVersion>1.4.2.100</AssemblyVersion>
+    <Version>1.4.3</Version>
+    <AssemblyVersion>1.4.3.100</AssemblyVersion>
     <RepositoryCommit Condition="'$(GIT_COMMIT)' != ''">$(GIT_COMMIT)</RepositoryCommit>
 
     <SignAssembly>True</SignAssembly>