diff --git a/CHANGELOG.md b/CHANGELOG.md
index 566a90d9..3b015e41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ 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).
 
+## [v5.8.1] - 2023-03-29
+### Fixed
+- [#132](https://github.com/z4kn4fein/stashbox/issues/132): Open generic constraint validation rejected resolution requests for interface type generic arguments with `class` constraint. 
+
 ## [v5.8.0] - 2023-02-28
 ### Fixed
 - Batch registration (like `.RegisterAssembly()` and `.RegisterTypes()`) produced individual registrations for each interface/base type and implementation type pairs.
@@ -336,6 +340,7 @@ The validation was executed only at the expression tree building phase, so an al
 - Removed the legacy container extension functionality.
 - Removed the support of PCL v259.
 
+[v5.8.1]: https://github.com/z4kn4fein/stashbox/compare/5.8.0...5.8.1
 [v5.8.0]: https://github.com/z4kn4fein/stashbox/compare/5.7.1...5.8.0
 [v5.7.1]: https://github.com/z4kn4fein/stashbox/compare/5.7.0...5.7.1
 [v5.7.0]: https://github.com/z4kn4fein/stashbox/compare/5.6.0...5.7.0
diff --git a/README.md b/README.md
index 6351b3ab..4aad9b62 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Stashbox is a lightweight, fast, and portable dependency injection framework for
 
 Github (stable) | NuGet (stable) | Fuget (stable)                                                                                                                 | NuGet (pre-release)
 --- | --- |--------------------------------------------------------------------------------------------------------------------------------| ---
-[![Github release](https://img.shields.io/github/release/z4kn4fein/stashbox.svg)](https://github.com/z4kn4fein/stashbox/releases) | [![NuGet Version](https://buildstats.info/nuget/Stashbox)](https://www.nuget.org/packages/Stashbox/) | [![Stashbox on fuget.org](https://www.fuget.org/packages/Stashbox/badge.svg?v=5.8.0)](https://www.fuget.org/packages/Stashbox) | [![Nuget pre-release](https://img.shields.io/nuget/vpre/Stashbox)](https://www.nuget.org/packages/Stashbox/)
+[![Github release](https://img.shields.io/github/release/z4kn4fein/stashbox.svg)](https://github.com/z4kn4fein/stashbox/releases) | [![NuGet Version](https://buildstats.info/nuget/Stashbox)](https://www.nuget.org/packages/Stashbox/) | [![Stashbox on fuget.org](https://www.fuget.org/packages/Stashbox/badge.svg?v=5.8.1)](https://www.fuget.org/packages/Stashbox) | [![Nuget pre-release](https://img.shields.io/nuget/vpre/Stashbox)](https://www.nuget.org/packages/Stashbox/)
 
 ## Core Attributes
  - 🚀 Fast, thread-safe, and lock-free operations.
diff --git a/docs/docs/getting-started/introduction.md b/docs/docs/getting-started/introduction.md
index d88d3a51..73474698 100644
--- a/docs/docs/getting-started/introduction.md
+++ b/docs/docs/getting-started/introduction.md
@@ -12,7 +12,7 @@ Stashbox and its extensions are distributed via [NuGet](https://www.nuget.org/pa
 
 You can install the package by typing the following into the Package Manager Console:
 ```powershell
-Install-Package Stashbox -Version 5.8.0
+Install-Package Stashbox -Version 5.8.1
 ```
 
 </TabItem>
@@ -20,7 +20,7 @@ Install-Package Stashbox -Version 5.8.0
 
 You can install the package by using the dotnet cli:
 ```bash
-dotnet add package Stashbox --version 5.8.0
+dotnet add package Stashbox --version 5.8.1
 ```
 
 </TabItem>
@@ -28,7 +28,7 @@ dotnet add package Stashbox --version 5.8.0
 
 You can add the package into the package references of your `.csproj`:
 ```xml
-<PackageReference Include="Stashbox" Version="5.8.0" />
+<PackageReference Include="Stashbox" Version="5.8.1" />
 ```
 
 </TabItem>
diff --git a/docs/docs/getting-started/overview.md b/docs/docs/getting-started/overview.md
index f2e1fcf4..bf0e1ba1 100644
--- a/docs/docs/getting-started/overview.md
+++ b/docs/docs/getting-started/overview.md
@@ -17,7 +17,7 @@ These are the latest available stable and pre-release versions:
 
 Github (stable) | NuGet (stable) | Fuget (stable)                                                                                                                 | NuGet (daily)
 --- | --- |--------------------------------------------------------------------------------------------------------------------------------| ---
-[![Github release](https://img.shields.io/github/release/z4kn4fein/stashbox.svg)](https://github.com/z4kn4fein/stashbox/releases) | [![NuGet Version](https://buildstats.info/nuget/Stashbox)](https://www.nuget.org/packages/Stashbox/) | [![Stashbox on fuget.org](https://www.fuget.org/packages/Stashbox/badge.svg?v=5.8.0)](https://www.fuget.org/packages/Stashbox) | [![Nuget pre-release](https://img.shields.io/nuget/vpre/Stashbox)](https://www.nuget.org/packages/Stashbox/)
+[![Github release](https://img.shields.io/github/release/z4kn4fein/stashbox.svg)](https://github.com/z4kn4fein/stashbox/releases) | [![NuGet Version](https://buildstats.info/nuget/Stashbox)](https://www.nuget.org/packages/Stashbox/) | [![Stashbox on fuget.org](https://www.fuget.org/packages/Stashbox/badge.svg?v=5.8.1)](https://www.fuget.org/packages/Stashbox) | [![Nuget pre-release](https://img.shields.io/nuget/vpre/Stashbox)](https://www.nuget.org/packages/Stashbox/)
 
 ## Core attributes
  - 🚀 Fast, thread-safe, and lock-free operations.
diff --git a/docs/src/pages/index.js b/docs/src/pages/index.js
index 381391ef..1926ace6 100644
--- a/docs/src/pages/index.js
+++ b/docs/src/pages/index.js
@@ -24,7 +24,7 @@ function HomepageHeader() {
 
         <div className={styles.installContainer}>
           <div className={styles.install}>
-            <pre><span className={styles.command_start}>{'$'} </span><span className={styles.command}>dotnet</span><span> add package Stashbox</span><span className={styles.options}> --version</span> 5.8.0<span className={styles.cursor}></span></pre>
+            <pre><span className={styles.command_start}>{'$'} </span><span className={styles.command}>dotnet</span><span> add package Stashbox</span><span className={styles.options}> --version</span> 5.8.1<span className={styles.cursor}></span></pre>
           </div>
         </div>