diff --git a/Directory.Build.props b/Directory.Build.props
index 2fb1f6a36..2c852ca11 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -25,7 +25,7 @@
   </Choose>
 
   <ItemGroup>
-    <PackageReference Include="Nerdbank.GitVersioning" Version="3.6.133" PrivateAssets="All" />
+    <PackageReference Include="Nerdbank.GitVersioning" Version="3.6.139" PrivateAssets="All" />
   </ItemGroup>
 
   <Choose>
diff --git a/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj b/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj
index 3e687c399..db70cacd7 100644
--- a/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj
+++ b/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj
@@ -5,9 +5,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj b/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj
index 35243d518..2c02dcade 100644
--- a/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj
+++ b/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj
@@ -5,9 +5,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj b/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj
index a14f74068..ce059f06f 100644
--- a/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj
+++ b/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj
@@ -11,9 +11,9 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/tests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests.csproj b/tests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests.csproj
index 433a0741e..76f768ef0 100644
--- a/tests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests.csproj
@@ -5,9 +5,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.Mvvm.Internals.UnitTests/CommunityToolkit.Mvvm.Internals.UnitTests.csproj b/tests/CommunityToolkit.Mvvm.Internals.UnitTests/CommunityToolkit.Mvvm.Internals.UnitTests.csproj
index 34765766c..5c35d66d3 100644
--- a/tests/CommunityToolkit.Mvvm.Internals.UnitTests/CommunityToolkit.Mvvm.Internals.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.Internals.UnitTests/CommunityToolkit.Mvvm.Internals.UnitTests.csproj
@@ -5,9 +5,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.Mvvm.Roslyn401.UnitTests/CommunityToolkit.Mvvm.Roslyn401.UnitTests.csproj b/tests/CommunityToolkit.Mvvm.Roslyn401.UnitTests/CommunityToolkit.Mvvm.Roslyn401.UnitTests.csproj
index 7bf764d58..115f23003 100644
--- a/tests/CommunityToolkit.Mvvm.Roslyn401.UnitTests/CommunityToolkit.Mvvm.Roslyn401.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.Roslyn401.UnitTests/CommunityToolkit.Mvvm.Roslyn401.UnitTests.csproj
@@ -7,11 +7,11 @@
 
   <ItemGroup>
     <PackageReference Include="Dbs.Signed3.Nito.AsyncEx.Context" Version="5.0.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="System.Reactive" Version="6.0.0" />
-    <PackageReference Include="System.Text.Json" Version="8.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="System.Reactive" Version="6.0.1" />
+    <PackageReference Include="System.Text.Json" Version="8.0.4" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.Mvvm.Roslyn431.UnitTests/CommunityToolkit.Mvvm.Roslyn431.UnitTests.csproj b/tests/CommunityToolkit.Mvvm.Roslyn431.UnitTests/CommunityToolkit.Mvvm.Roslyn431.UnitTests.csproj
index 44eb2705f..c1973e0eb 100644
--- a/tests/CommunityToolkit.Mvvm.Roslyn431.UnitTests/CommunityToolkit.Mvvm.Roslyn431.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.Roslyn431.UnitTests/CommunityToolkit.Mvvm.Roslyn431.UnitTests.csproj
@@ -7,11 +7,11 @@
 
   <ItemGroup>
     <PackageReference Include="Dbs.Signed3.Nito.AsyncEx.Context" Version="5.0.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="System.Reactive" Version="6.0.0" />
-    <PackageReference Include="System.Text.Json" Version="8.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="System.Reactive" Version="6.0.1" />
+    <PackageReference Include="System.Text.Json" Version="8.0.4" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests.csproj b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests.csproj
index 963ee0c63..c1717ef47 100644
--- a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests.csproj
@@ -2,20 +2,15 @@
 
   <PropertyGroup>
     <TargetFrameworks>net472;net6.0;net7.0;net8.0</TargetFrameworks>
-    <RestoreSources>
-      https://api.nuget.org/v3/index.json;
-      https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json;
-    </RestoreSources>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.MSTest" Version="1.1.2-beta1.23509.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2-beta1.23509.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing.MSTest" Version="1.1.2-beta1.23509.1" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.0.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_AsyncVoidReturningRelayCommandMethodCodeFixer.cs b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_AsyncVoidReturningRelayCommandMethodCodeFixer.cs
index a74c975a1..5062572d1 100644
--- a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_AsyncVoidReturningRelayCommandMethodCodeFixer.cs
+++ b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_AsyncVoidReturningRelayCommandMethodCodeFixer.cs
@@ -9,11 +9,11 @@
 using CSharpCodeFixTest = Microsoft.CodeAnalysis.CSharp.Testing.CSharpCodeFixTest<
     CommunityToolkit.Mvvm.SourceGenerators.AsyncVoidReturningRelayCommandMethodAnalyzer,
     CommunityToolkit.Mvvm.CodeFixers.AsyncVoidReturningRelayCommandMethodCodeFixer,
-    Microsoft.CodeAnalysis.Testing.Verifiers.MSTestVerifier>;
+    Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
 using CSharpCodeFixVerifier = Microsoft.CodeAnalysis.CSharp.Testing.CSharpCodeFixVerifier<
     CommunityToolkit.Mvvm.SourceGenerators.AsyncVoidReturningRelayCommandMethodAnalyzer,
     CommunityToolkit.Mvvm.CodeFixers.AsyncVoidReturningRelayCommandMethodCodeFixer,
-    Microsoft.CodeAnalysis.Testing.Verifiers.MSTestVerifier>;
+    Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
 
 namespace CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests;
 
diff --git a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_ClassUsingAttributeInsteadOfInheritanceCodeFixer.cs b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_ClassUsingAttributeInsteadOfInheritanceCodeFixer.cs
index d90d9a5bb..018c5fc63 100644
--- a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_ClassUsingAttributeInsteadOfInheritanceCodeFixer.cs
+++ b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_ClassUsingAttributeInsteadOfInheritanceCodeFixer.cs
@@ -9,11 +9,11 @@
 using CSharpCodeFixTest = Microsoft.CodeAnalysis.CSharp.Testing.CSharpCodeFixTest<
     CommunityToolkit.Mvvm.SourceGenerators.ClassUsingAttributeInsteadOfInheritanceAnalyzer,
     CommunityToolkit.Mvvm.CodeFixers.ClassUsingAttributeInsteadOfInheritanceCodeFixer,
-    Microsoft.CodeAnalysis.Testing.Verifiers.MSTestVerifier>;
+    Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
 using CSharpCodeFixVerifier = Microsoft.CodeAnalysis.CSharp.Testing.CSharpCodeFixVerifier<
     CommunityToolkit.Mvvm.SourceGenerators.ClassUsingAttributeInsteadOfInheritanceAnalyzer,
     CommunityToolkit.Mvvm.CodeFixers.ClassUsingAttributeInsteadOfInheritanceCodeFixer,
-    Microsoft.CodeAnalysis.Testing.Verifiers.MSTestVerifier>;
+    Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
 
 namespace CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests;
 
diff --git a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_FieldReferenceForObservablePropertyFieldCodeFixer.cs b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_FieldReferenceForObservablePropertyFieldCodeFixer.cs
index 1ee684019..596a11b66 100644
--- a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_FieldReferenceForObservablePropertyFieldCodeFixer.cs
+++ b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests/Test_FieldReferenceForObservablePropertyFieldCodeFixer.cs
@@ -9,11 +9,11 @@
 using CSharpCodeFixTest = Microsoft.CodeAnalysis.CSharp.Testing.CSharpCodeFixTest<
     CommunityToolkit.Mvvm.SourceGenerators.FieldReferenceForObservablePropertyFieldAnalyzer,
     CommunityToolkit.Mvvm.CodeFixers.FieldReferenceForObservablePropertyFieldCodeFixer,
-    Microsoft.CodeAnalysis.Testing.Verifiers.MSTestVerifier>;
+    Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
 using CSharpCodeFixVerifier = Microsoft.CodeAnalysis.CSharp.Testing.CSharpCodeFixVerifier<
     CommunityToolkit.Mvvm.SourceGenerators.FieldReferenceForObservablePropertyFieldAnalyzer,
     CommunityToolkit.Mvvm.CodeFixers.FieldReferenceForObservablePropertyFieldCodeFixer,
-    Microsoft.CodeAnalysis.Testing.Verifiers.MSTestVerifier>;
+    Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
 
 namespace CommunityToolkit.Mvvm.SourceGenerators.Roslyn401.UnitTests;
 
diff --git a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests.csproj b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests.csproj
index 0c9526e65..7323b4a69 100644
--- a/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.UnitTests.csproj
@@ -3,18 +3,14 @@
   <PropertyGroup>
     <TargetFrameworks>net472;net6.0;net7.0;net8.0</TargetFrameworks>
     <DefineConstants>$(DefineConstants);ROSLYN_4_3_1_OR_GREATER</DefineConstants>
-    <RestoreSources>
-      https://api.nuget.org/v3/index.json;
-      https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json;
-    </RestoreSources>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.MSTest" Version="1.1.2-beta1.23509.1" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.4.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.5.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.5.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/CommunityToolkit.Mvvm.SourceGenerators.UnitTests/Helpers/CSharpAnalyzerWithLanguageVersionTest{TAnalyzer}.cs b/tests/CommunityToolkit.Mvvm.SourceGenerators.UnitTests/Helpers/CSharpAnalyzerWithLanguageVersionTest{TAnalyzer}.cs
index eb33e32c0..d76d8f356 100644
--- a/tests/CommunityToolkit.Mvvm.SourceGenerators.UnitTests/Helpers/CSharpAnalyzerWithLanguageVersionTest{TAnalyzer}.cs
+++ b/tests/CommunityToolkit.Mvvm.SourceGenerators.UnitTests/Helpers/CSharpAnalyzerWithLanguageVersionTest{TAnalyzer}.cs
@@ -8,7 +8,6 @@
 using Microsoft.CodeAnalysis.CSharp.Testing;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.Diagnostics;
-using Microsoft.CodeAnalysis.Testing.Verifiers;
 using Microsoft.CodeAnalysis.Testing;
 using Microsoft.CodeAnalysis;
 #if NET472
@@ -21,7 +20,7 @@ namespace CommunityToolkit.Mvvm.SourceGenerators.UnitTests.Helpers;
 /// A custom <see cref="CSharpAnalyzerTest{TAnalyzer, TVerifier}"/> that uses a specific C# language version to parse code.
 /// </summary>
 /// <typeparam name="TAnalyzer">The type of the analyzer to test.</typeparam>
-internal sealed class CSharpAnalyzerWithLanguageVersionTest<TAnalyzer> : CSharpAnalyzerTest<TAnalyzer, MSTestVerifier>
+internal sealed class CSharpAnalyzerWithLanguageVersionTest<TAnalyzer> : CSharpAnalyzerTest<TAnalyzer, DefaultVerifier>
     where TAnalyzer : DiagnosticAnalyzer, new()
 {
     /// <summary>