diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb9b7d9a..835dc507 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ 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).
 
 
-## [Unreleased]
+## [1.12.0] - 2022-03-25
 ### Changed
 - Optimize BinarySearch
 
diff --git a/Directory.Build.props b/Directory.Build.props
index 71b8315a..85e33a4f 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -7,8 +7,8 @@
     <RepositoryUrl>https://github.com/kzrnm/ac-library-csharp</RepositoryUrl>
     <PackageReleaseNotes>https://github.com/kzrnm/ac-library-csharp/blob/master/CHANGELOG.md</PackageReleaseNotes>
 
-    <Version>1.11.2</Version>
-    <AssemblyVersion>1.11.2.100</AssemblyVersion>
+    <Version>1.12.0</Version>
+    <AssemblyVersion>1.12.0.100</AssemblyVersion>
     <RepositoryCommit Condition="'$(GIT_COMMIT)' != ''">$(GIT_COMMIT)</RepositoryCommit>
 
     <SignAssembly>True</SignAssembly>