diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index f3c2112ae..a5e225eee 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -3,7 +3,7 @@
 
   <!-- Include PolySharp to generate polyfills for all projects (on their .NET Standard 2.x targets) -->
   <ItemGroup>
-    <PackageReference Include="PolySharp" Version="1.8.1">
+    <PackageReference Include="PolySharp" Version="1.12.1">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>build; analyzers</IncludeAssets>
     </PackageReference>
diff --git a/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj b/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj
index 3436db962..61d755997 100644
--- a/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj
+++ b/tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
   </ItemGroup>
 
diff --git a/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj b/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj
index c1f33bdb7..b0d1da099 100644
--- a/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj
+++ b/tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
   </ItemGroup>
 
diff --git a/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj b/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj
index cd84ec4af..6ef1ec69d 100644
--- a/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj
+++ b/tests/CommunityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj
@@ -11,8 +11,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
   </ItemGroup>
 
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 4a949f099..4522e0f57 100644
--- a/tests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
   </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 a1cecde7e..10bc3de7d 100644
--- a/tests/CommunityToolkit.Mvvm.Internals.UnitTests/CommunityToolkit.Mvvm.Internals.UnitTests.csproj
+++ b/tests/CommunityToolkit.Mvvm.Internals.UnitTests/CommunityToolkit.Mvvm.Internals.UnitTests.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
   </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 b4e7b7bba..7199d90fe 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="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
     <PackageReference Include="System.Reactive" Version="5.0.0" />
-    <PackageReference Include="System.Text.Json" Version="7.0.1" />
+    <PackageReference Include="System.Text.Json" Version="7.0.2" />
   </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 f3dad9cb7..780c6ed90 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="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
     <PackageReference Include="System.Reactive" Version="5.0.0" />
-    <PackageReference Include="System.Text.Json" Version="7.0.1" />
+    <PackageReference Include="System.Text.Json" Version="7.0.2" />
   </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 849698ae5..53c2ba335 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
@@ -10,8 +10,8 @@
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing.MSTest" Version="1.1.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
   </ItemGroup>
 
   <ItemGroup>
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 0ba357902..4d536d505 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
@@ -9,8 +9,8 @@
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.MSTest" Version="1.1.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.4.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
   </ItemGroup>
 
   <ItemGroup>