Squashed commit of the following:

commit 5bd4b32 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Mon Mar 7 00:29:26 2022 +0100 Update stashbox.csproj commit 73712d6 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Mon Mar 7 00:00:47 2022 +0100 Update changelog commit daf5515 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Sun Mar 6 23:18:31 2022 +0100 Update CHANGELOG.md commit 5c28d00 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Sun Mar 6 22:34:11 2022 +0100 Update 114_Unable_to_resolve_IHubContext.cs commit 4c754b9 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Sun Mar 6 22:33:25 2022 +0100 Fix for #114 commit 31da8fb Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Thu Mar 3 13:29:36 2022 +0100 Update docs commit a705b77 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Thu Mar 3 03:34:52 2022 +0100 Update docs commit 9a3d4c6 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Thu Mar 3 03:24:36 2022 +0100 Update RequestContext.cs commit 84dcaa7 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Thu Mar 3 03:19:25 2022 +0100 Update docs commit efce1da Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Thu Mar 3 03:14:59 2022 +0100 Update changelog & docs commit 29a3c6b Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Thu Mar 3 02:43:09 2022 +0100 Pack readme commit 1909815 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Thu Mar 3 01:11:52 2022 +0100 Remove automatic pre-release package deployment to NuGet commit 1acdd37 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Wed Mar 2 23:50:13 2022 +0100 Update changelog, add ResolveFactoryOrDefault() commit 1015495 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Wed Mar 2 17:44:14 2022 +0100 Ability to exclude instance from dispose tracking in factory delegates commit 74a99c2 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Tue Mar 1 21:21:09 2022 +0100 Refactor commit f0b5559 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Tue Mar 1 20:31:56 2022 +0100 Refactor commit fd96834 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Tue Mar 1 02:48:21 2022 +0100 Enable null-safety commit adbc669 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Mon Feb 28 18:50:18 2022 +0100 ServiceRegistration refactor commit eccbe95 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Mon Feb 28 03:46:12 2022 +0100 Eliminate MemberwiseClone() usages commit 44da27d Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Mon Feb 28 01:37:11 2022 +0100 More tests commit 799557d Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Mon Feb 28 01:19:16 2022 +0100 Small refactor commit b3b6962 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Sun Feb 27 18:36:13 2022 +0100 Include dev branch in workflows commit 3159cb5 Author: Peter Csajtai <peter.csajtai@outlook.com> Date: Sun Feb 27 18:34:11 2022 +0100 ValueTuple support & ResolveOrDefault()
z4kn4fein · Mar 7, 2022 · 8c6006c · 8c6006c
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diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
@@ -13,7 +13,7 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [ master, v5 ]
+    branches: [ master, dev ]
     paths-ignore:
       - '**.md'
       - 'docs/**'

diff --git a/.github/workflows/linux-macOS-CI.yml b/.github/workflows/linux-macOS-CI.yml
@@ -1,7 +1,7 @@
 name: Build on Linux and macOS
 on:
   push:
-    branches: [ master, v5 ]
+    branches: [ master, dev ]
     paths-ignore:
       - '**.md'
       - 'docs/**'

diff --git a/.github/workflows/sonar-analysis.yml b/.github/workflows/sonar-analysis.yml
@@ -1,7 +1,7 @@
 name: SonarCloud Analysis
 on:
   push:
-    branches: [ master, v5 ]
+    branches: [ master, dev ]
     paths-ignore:
       - '**.md'
       - 'docs/**'

diff --git a/.version b/.version
@@ -1 +1 @@
-5.1.0
+5.2.0
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,30 @@ 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).
 
+## [v5.2.0] - 2022-03-07
+### Fixed
+- Unable to resolve IHubContext. [#114](https://github.com/z4kn4fein/stashbox/issues/114)
+### Added
+- Null-safety by enabling null-state analysis.
+- Option to exclude a factory's result from dispose tracking, even if it would be tracked by default. This gives the ability to decide within the factory delegate that the result should be tracked or not.
+  ```cs
+  .Register<Service>(options => options
+      .WithFactory<IRequestContext>(requestContext => 
+          requestContext.ExcludeFromTracking(/* get an existing or instantiate a new service */)
+      )
+  );
+  ```
+- A new `ResolveFactoryOrDefault()` method that allows `null` results.
+- A new `ResolveOrDefault()` method that allows `null` results.
+- `ValueTuple<,>` [metadata](https://z4kn4fein.github.io/stashbox/#/advanced/wrappers-resolvers?id=metadata-amp-tuple) support.
+
+### Changed
+- `Resolve()` with the `nullResultAllowed` parameter became obsolete, it was replaced by `ResolveOrDefault()`.
+- Each `ResolveFactory<>()` method became obsolete as their functionality is equivalent to `Resolve<Func<>>()`.
+
+### Removed
+- `nullResultAllowed` parameter of `ResolveFactory()`.
+
 ## [v5.1.0] - 2022-02-27
 ### Changed
 - Marked the `.WithRuntimeCircularDependencyTracking()` container configuration option as **Obsolete** in favor of [parameterized factory delegates](https://z4kn4fein.github.io/stashbox/#/usage/advanced-registration?id=consider-this-before-using-the-resolver-parameter-inside-a-factory).
@@ -201,6 +225,7 @@ 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.
 
+[v5.2.0]: https://github.com/z4kn4fein/stashbox/compare/5.1.0...5.2.0
 [v5.1.0]: https://github.com/z4kn4fein/stashbox/compare/5.0.1...5.1.0
 [v5.0.1]: https://github.com/z4kn4fein/stashbox/compare/5.0.0...5.0.1
 [v5.0.0]: https://github.com/z4kn4fein/stashbox/compare/4.1.0...5.0.0

diff --git 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=5.0.1)](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=5.2.0)](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.
@@ -68,4 +68,4 @@ Github (stable) | NuGet (stable) | Fuget (stable) | NuGet (pre-release)
 
 *Powered by [Jetbrains'](https://www.jetbrains.com/?from=Stashbox) [Open Source License](https://www.jetbrains.com/community/opensource/?from=Stashbox)*
 
-[![Jetbrains](https://cdn.rawgit.com/z4kn4fein/stashbox/master/assets/jetbrains.svg)](https://www.jetbrains.com/?from=Stashbox)
+[![Jetbrains](https://raw.githubusercontent.com/z4kn4fein/stashbox/master/assets/jetbrains.svg)](https://www.jetbrains.com/?from=Stashbox)
diff --git a/appveyor.yml b/appveyor.yml
@@ -3,13 +3,6 @@ environment:
     secure: z/dKTRVRPmpItPTM/lYdX7dBJk3roDLV98Uj1XzpDqqV868xhHX8dnyKwPAJooUj
   build_version: ''
 
-deploy:
-- provider: NuGet
-  api_key:
-    secure: reeMv8YSGs2hypmjbqAl5z0mxm4QBgHRYsnSwsYUXJZ76begJoSdg51CWGFyBPgt
-  on:
-    branch: master
-
 skip_tags: true
 
 skip_commits:

diff --git a/docs/_coverpage.md b/docs/_coverpage.md
@@ -1,6 +1,6 @@
 ![logo](assets/images/icon.png)
 
-# Stashbox <small>5.0.1</small>
+# Stashbox <small>5.2.0</small>
 
 > A lightweight, fast, and portable .NET DI framework.
 

diff --git a/docs/advanced/wrappers-resolvers.md b/docs/advanced/wrappers-resolvers.md
@@ -6,8 +6,8 @@ Stashbox uses so-called *Wrapper* and *Resolver* implementations to handle those
 * `EnumerableWrapper`: Used to resolve a collection of services wrapped in one of the collection interfaces that a .NET `Array` implements. (`IEnumerable<>`, `IList<>`, `ICollection<>`, `IReadOnlyList<>`, `IReadOnlyCollection<>`) 
 * `LazyWrapper`: Used to resolve services [wrapped](advanced/wrappers-resolvers?id=lazy) in `Lazy<>`.
 * `FuncWrapper`: Used to resolve services [wrapped](advanced/wrappers-resolvers?id=func) in `Func<>` delegates.
-* `MetadataWrapper`: Used to resolve services [wrapped](advanced/wrappers-resolvers?id=metadata-amp-tuple) in `Tuple<>` or `Metadata<>`.
-* `KeyValueWrapper`: Used to resolve services [wrapped](advanced/wrappers-resolvers?id=keyvaluepair-amp-readonlykeyvalue) in `KeyValuePair` or `ReadOnlyKeyValue<>`.
+* `MetadataWrapper`: Used to resolve services [wrapped](advanced/wrappers-resolvers?id=metadata-amp-tuple) in `ValueTuple<,>`, `Tuple<,>`, or `Metadata<,>`.
+* `KeyValueWrapper`: Used to resolve services [wrapped](advanced/wrappers-resolvers?id=keyvaluepair-amp-readonlykeyvalue) in `KeyValuePair<,>` or `ReadOnlyKeyValue<,>`.
 * `OptionalValueResolver`: Used to resolve optional parameters.
 * `DefaultValueResolver`: Used to resolve default values.
 * `ParentContainerResolver`: Used to resolve services that are only registered in one of the parent containers.
@@ -93,11 +93,11 @@ IJob job = funcOfJob(config["connectionString"], new ConsoleLogger());
 <!-- div:left-panel -->
 ### Metadata & Tuple
 With the `.WithMetadata()` registration option, you can attach additional information to a service.
-To gather this information, you can request the service wrapped in either `Metadata<,>` or `Tuple<,>`.
+To gather this information, you can request the service wrapped in either `Metadata<,>`, `ValueTuple<,>`, or `Tuple<,>`.
 
-`Metadata<,>` is a type from the `Stashbox` package, so you might prefer using `Tuple<,>` if you want to avoid referencing Stashbox in certain parts of your project.
+`Metadata<,>` is a type from the `Stashbox` package, so you might prefer using `ValueTuple<,>` or `Tuple<,>` if you want to avoid referencing Stashbox in certain parts of your project.
 
-You can also filter a collection of services by their metadata. Requesting `IEnumerable<Tuple<,>>` will yield only those services that have the given type of metadata.
+You can also filter a collection of services by their metadata. Requesting `IEnumerable<ValueTuple<,>>` will yield only those services that have the given type of metadata.
 <!-- div:right-panel -->
 
 <!-- tabs:start -->
@@ -110,9 +110,13 @@ var jobWithConnectionString = container.Resolve<Metadata<IJob, string>>();
 // prints: "connection-string-to-db"
 Console.WriteLine(jobWithConnectionString.Data);
 
-var alsoJobWithConnectionString = container.Resolve<Tuple<IJob, string>>();
+var alsoJobWithConnectionString = container.Resolve<ValueTuple<IJob, string>>();
 // prints: "connection-string-to-db"
 Console.WriteLine(alsoJobWithConnectionString.Item2);
+
+var stillJobWithConnectionString = container.Resolve<Tuple<IJob, string>>();
+// prints: "connection-string-to-db"
+Console.WriteLine(stillJobWithConnectionString.Item2);
 ```
 
 ##### **Collection filtering**
@@ -125,17 +129,17 @@ container.Register<IService, Service3>(options => options
     .WithMetadata(5));
 
 // the result is: [Service1, Service2]
-var servicesWithStringMetadata = container.Resolve<Tuple<IService, string>[]>();
+var servicesWithStringMetadata = container.Resolve<ValueTuple<IService, string>[]>();
 
 // the result is: [Service3]
-var servicesWithIntMetadata = container.Resolve<Tuple<IService, int>[]>();
+var servicesWithIntMetadata = container.Resolve<ValueTuple<IService, int>[]>();
 ```
 
 <!-- tabs:end -->
 
 <!-- panels:end -->
 
-?> Metadata can also be a complex type e.g., an `IDictionary<>`.
+?> Metadata can also be a complex type e.g., an `IDictionary<,>`.
 
 !> When no service found for a particular metadata type, the container throws a [ResolutionFailedException](diagnostics/validation?id=resolution-validation). In case of an `IEnumerable<>` request, an empty collection will be returned for a non-existing metadata.
 

diff --git a/docs/configuration/registration-configuration.md b/docs/configuration/registration-configuration.md
@@ -93,13 +93,13 @@ container.Register<ILogger, ConsoleLogger>(options => options
 <!-- panels:start -->
 <!-- div:left-panel -->
 ### `WithMetadata`
-Sets additional metadata for the registration. It's attached to the service upon its resolution through `Metadata<>` or `Tuple<>` wrappers.
+Sets additional metadata for the registration. It's attached to the service upon its resolution through `ValueTuple<,>`, `Tuple<,>`, or `Metadata<,>` wrappers.
 <!-- div:right-panel -->
 ```cs
 container.Register<IJob, DbBackup>(options => options
     .WithMetadata(connectionString));
 
-var jobWithConnectionString = container.Resolve<Tuple<IJob, string>>();
+var jobWithConnectionString = container.Resolve<ValueTuple<IJob, string>>();
 Console.WriteLine(jobWithConnectionString.Item2); // prints the connection string.
 
 ```

diff --git a/docs/diagnostics/utilities.md b/docs/diagnostics/utilities.md
@@ -29,7 +29,7 @@ There might be cases when rather than finding out that a service is registered,
 `CanResolve()` returns `true` only when at least one of the following is true:
 - The requested type is registered in the current or one of the parent containers.
 - The requested type is a closed generic type and its open generic definition is registered.
-- The requested type is a wrapper (`IEnumerable<>`, `Lazy<>`, `Func<>`, `KeyValuePair<>`, `ReadOnlyKeyValue<>`, `Metadata<>`, or `Tuple<>`) and the underlying type is registered.
+- The requested type is a wrapper (`IEnumerable<>`, `Lazy<>`, `Func<>`, `KeyValuePair<,>`, `ReadOnlyKeyValue<,>`, `Metadata<,>`, `ValueTuple<,>`, or `Tuple<,>`) and the underlying type is registered.
 - The requested type is not registered but it's resolvable and the [unknown type resolution](configuration/container-configuration?id=unknown-type-resolution) is enabled.
 
 <!-- div:right-panel -->

diff --git a/docs/getting-started/introduction.md b/docs/getting-started/introduction.md
@@ -8,21 +8,21 @@ 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:
 ```
-Install-Package Stashbox -Version 5.0.1
+Install-Package Stashbox -Version 5.2.0
 ```
 
 #### **dotnet CLI**
 
 You can install the package by using the dotnet cli:
 ```
-dotnet add package Stashbox --version 5.0.1
+dotnet add package Stashbox --version 5.2.0
 ```
 
 #### **PackageReference**
 
 You can add the package into the package references of your `.csproj`:
 ```
-<PackageReference Include="Stashbox" Version="5.0.1" />
+<PackageReference Include="Stashbox" Version="5.2.0" />
 ```
 
 <!-- tabs:end -->

diff --git a/docs/getting-started/overview.md b/docs/getting-started/overview.md
@@ -13,7 +13,7 @@ These are the latest stable and pre-release versions available:
 
 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=5.0.1)](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=5.2.0)](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/usage/advanced-registration.md b/docs/usage/advanced-registration.md
@@ -68,9 +68,7 @@ container.Register<IJob, DbBackup>(options => options
 
 <!-- div:left-panel -->
 ### Factories with parameter overrides
-Suppose you'd want to use custom parameters for your service's instantiation rather than captured variables in lambda closures. In that case, you can register a `Func<>` delegate with parameters that you can use to pass your dependencies at resolution time.
-
-?> This example is about pre-registered factories; however, the container can also implicitly [wrap](advanced/wrappers-resolvers?id=func) your service in a `Func<>` without pre-registering.
+Stashbox can implicitly [wrap](advanced/wrappers-resolvers?id=func) your service in a `Func<>` delegate and lets you pass parameters that can override your service's dependencies. Moreover, you can register your own custom delegate that the container will resolve when you request your service wrapped in a `Func<>`.
 <!-- div:right-panel -->
 
 <!-- tabs:start -->
@@ -79,7 +77,7 @@ Suppose you'd want to use custom parameters for your service's instantiation rat
 container.RegisterFunc<string, IJob>((connectionString, resolver) => 
     new DbBackup(connectionString, resolver.Resolve<ILogger>()));
 
-Func<string, IJob> backupFactory = container.ResolveFactory<string, IJob>();
+Func<string, IJob> backupFactory = container.Resolve<Func<string, IJob>>();
 IJob dbBackup = backupFactory(Configuration["ConnectionString"]);
 ```
 

diff --git a/docs/usage/service-resolution.md b/docs/usage/service-resolution.md
@@ -412,24 +412,24 @@ IEnumerable<IJob> jobs = container.ResolveAll<IJob>();
 ## Optional resolution
 
 <!-- div:left-panel -->
-In cases where it's not guaranteed that a service is resolvable, either because it's not registered or any of its dependencies are missing, you can attempt an optional resolution by using the `nullResultAllowed` parameter of the `.Resolve()` method. 
+In cases where it's not guaranteed that a service is resolvable, either because it's not registered or any of its dependencies are missing, you can attempt an optional resolution by using the `ResolveOrDefault()` method. 
 
-In this case, the resolution request will return with `null` when the attempt fails.
+In this case, the resolution request will return with `null` (or `default` in case of type values) when the attempt fails.
 <!-- div:right-panel -->
 
 <!-- tabs:start -->
 #### **Generic API**
 ```cs
 // returns null when the resolution fails.
-IJob job = container.Resolve<IJob>(nullResultAllowed: true);
+IJob job = container.ResolveOrDefault<IJob>();
 
 // throws ResolutionFailedException when the resolution fails.
 IJob job = container.Resolve<IJob>();
 ```
 #### **Runtime type API**
 ```cs
 // returns null when the resolution fails.
-object job = container.Resolve(typeof(IJob), nullResultAllowed: true);
+object job = container.ResolveOrDefault(typeof(IJob));
 
 // throws ResolutionFailedException when the resolution fails.
 object job = container.Resolve(typeof(IJob));

diff --git a/sandbox/stashbox.benchmarks/DecoratorBenchmarks.cs b/sandbox/stashbox.benchmarks/DecoratorBenchmarks.cs
@@ -0,0 +1,47 @@
+extern alias from_nuget;
+extern alias from_project;
+using BenchmarkDotNet.Attributes;
+
+namespace Stashbox.Benchmarks
+{
+    [MemoryDiagnoser]
+    public class DecoratorBenchmarks
+    {
+        private readonly from_nuget::Stashbox.IStashboxContainer oldContainer =
+            new from_nuget::Stashbox.StashboxContainer();
+
+        private readonly from_project::Stashbox.IStashboxContainer newContainer =
+            new from_project::Stashbox.StashboxContainer();
+
+        [GlobalSetup]
+        public void Setup()
+        {
+            this.oldContainer.Register<IA, A>()
+                .RegisterDecorator<IA, ADec>();
+
+            this.newContainer.Register<IA, A>()
+                .RegisterDecorator<IA, ADec>();
+        }
+
+        [Benchmark(Baseline = true)]
+        public object Old()
+        {
+            return this.oldContainer.Resolve(typeof(IA));
+        }
+
+        [Benchmark]
+        public object New()
+        {
+            return this.newContainer.Resolve(typeof(IA));
+        }
+
+        interface IA { }
+
+        class A : IA { }
+
+        class ADec : IA
+        {
+            public ADec(IA a) { }
+        }
+    }
+}
diff --git a/sandbox/stashbox.benchmarks/Program.cs b/sandbox/stashbox.benchmarks/Program.cs
@@ -18,6 +18,7 @@ static void Main(string[] args)
             //BenchmarkRunner.Run<NullableBenchmarks>();
             //BenchmarkRunner.Run<BeginScopeBenchmarks>();
             //BenchmarkRunner.Run<SingletonBenchmarks>();
+            //BenchmarkRunner.Run<DecoratorBenchmarks>();
             Console.ReadKey();
         }
     }

diff --git a/sandbox/stashbox.benchmarks/Stashbox.Benchmarks.csproj b/sandbox/stashbox.benchmarks/Stashbox.Benchmarks.csproj
@@ -15,7 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.13.1" />
-    <PackageReference Include="Stashbox" Version="5.0.0" />
+    <PackageReference Include="Stashbox" Version="5.1.0" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">

diff --git a/src/Attributes/DependencyAttribute.cs b/src/Attributes/DependencyAttribute.cs
@@ -11,13 +11,13 @@ public class DependencyAttribute : Attribute
         /// <summary>
         /// The name of the dependency.
         /// </summary>
-        public object Name { get; set; }
+        public object? Name { get; set; }
 
         /// <summary>
         /// Constructs a <see cref="DependencyAttribute"/>
         /// </summary>
         /// <param name="name">The name of the dependency.</param>
-        public DependencyAttribute(object name = null)
+        public DependencyAttribute(object? name = null)
         {
             this.Name = name;
         }