diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index c805182c..008b2a9a 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -188,8 +188,10 @@ jobs:
           --no-build
           --configuration Release
           --property:Version=${{ inputs.version }}
-          --collect "XPlat Code Coverage;Format=opencover"
-          --logger "trx;LogFilePrefix=${{ matrix.os }}"
+          --coverlet
+          --coverlet-output-format opencover
+          --report-trx
+          --report-trx-filename "${{ matrix.os }}_{asm}_{tfm}_{arch}.trx"
           --results-directory artifacts
 
       - name: End Sonar Scanner
diff --git a/global.json b/global.json
new file mode 100644
index 00000000..3140116d
--- /dev/null
+++ b/global.json
@@ -0,0 +1,5 @@
+{
+  "test": {
+    "runner": "Microsoft.Testing.Platform"
+  }
+}
diff --git a/src/DemaConsulting.SysML2Tools.Core/DemaConsulting.SysML2Tools.Core.csproj b/src/DemaConsulting.SysML2Tools.Core/DemaConsulting.SysML2Tools.Core.csproj
index d7d17161..10a7d6ad 100644
--- a/src/DemaConsulting.SysML2Tools.Core/DemaConsulting.SysML2Tools.Core.csproj
+++ b/src/DemaConsulting.SysML2Tools.Core/DemaConsulting.SysML2Tools.Core.csproj
@@ -51,10 +51,10 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Sbom.Targets" Version="4.1.5" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.301" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.400" PrivateAssets="All" />
     <PackageReference Include="DemaConsulting.ApiMark.MSBuild" Version="0.4.10" PrivateAssets="All" />
     <PackageReference Include="DemaConsulting.Rendering.Layout" Version="0.1.0" />
-    <PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" Version="10.0.10" />
+    <PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" Version="10.0.11" />
   </ItemGroup>
 
   <!-- Language and Stdlib are independently packable NuGet packages of their own
@@ -82,11 +82,11 @@
            in packages that consume this tool.
          - IncludeAssets lists all asset types (including 'analyzers' and 'buildtransitive') to ensure
            Roslyn analyzers and MSBuild targets are fully activated during the build. -->
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.302">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.400">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.31.0.145097">
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.32.0.713">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/src/DemaConsulting.SysML2Tools.Language/DemaConsulting.SysML2Tools.Language.csproj b/src/DemaConsulting.SysML2Tools.Language/DemaConsulting.SysML2Tools.Language.csproj
index a739a798..bcb0ef40 100644
--- a/src/DemaConsulting.SysML2Tools.Language/DemaConsulting.SysML2Tools.Language.csproj
+++ b/src/DemaConsulting.SysML2Tools.Language/DemaConsulting.SysML2Tools.Language.csproj
@@ -61,8 +61,8 @@
   <ItemGroup>
     <PackageReference Include="Antlr4.Runtime.Standard" Version="4.13.1" />
     <PackageReference Include="Microsoft.Sbom.Targets" Version="4.1.5" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.301" PrivateAssets="All" />
-    <PackageReference Include="Polyfill" Version="11.0.2" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.400" PrivateAssets="All" />
+    <PackageReference Include="Polyfill" Version="11.2.0" PrivateAssets="All" />
     <!-- ApiMark: generate Markdown API reference docs from the XML doc comments (see
          GenerateDocumentationFile above) and bundle them into this project's own NuGet
          package (see ApiMarkPackDocs above). -->
@@ -82,11 +82,11 @@
 
   <!-- Code Analysis Dependencies -->
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.302">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.400">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.31.0.145097">
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.32.0.713">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/src/DemaConsulting.SysML2Tools.Stdlib/DemaConsulting.SysML2Tools.Stdlib.csproj b/src/DemaConsulting.SysML2Tools.Stdlib/DemaConsulting.SysML2Tools.Stdlib.csproj
index 4d3f22d0..246d93f7 100644
--- a/src/DemaConsulting.SysML2Tools.Stdlib/DemaConsulting.SysML2Tools.Stdlib.csproj
+++ b/src/DemaConsulting.SysML2Tools.Stdlib/DemaConsulting.SysML2Tools.Stdlib.csproj
@@ -87,16 +87,16 @@
   <!-- Code Analysis Dependencies -->
   <ItemGroup>
     <PackageReference Include="Microsoft.Sbom.Targets" Version="4.1.5" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.301" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.400" PrivateAssets="All" />
     <!-- ApiMark: generate Markdown API reference docs from the XML doc comments (see
          GenerateDocumentationFile above) and bundle them into this project's own NuGet
          package (see ApiMarkPackDocs above). -->
     <PackageReference Include="DemaConsulting.ApiMark.MSBuild" Version="0.4.10" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.302">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.400">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.31.0.145097">
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.32.0.713">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/src/DemaConsulting.SysML2Tools.Tool/DemaConsulting.SysML2Tools.Tool.csproj b/src/DemaConsulting.SysML2Tools.Tool/DemaConsulting.SysML2Tools.Tool.csproj
index 8e88a704..1100789b 100644
--- a/src/DemaConsulting.SysML2Tools.Tool/DemaConsulting.SysML2Tools.Tool.csproj
+++ b/src/DemaConsulting.SysML2Tools.Tool/DemaConsulting.SysML2Tools.Tool.csproj
@@ -66,8 +66,8 @@
   <!-- Build Tool Dependencies -->
   <ItemGroup>
     <PackageReference Include="Microsoft.Sbom.Targets" Version="4.1.5" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.301" PrivateAssets="All" />
-    <PackageReference Include="Polyfill" Version="11.0.2" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.400" PrivateAssets="All" />
+    <PackageReference Include="Polyfill" Version="11.2.0" PrivateAssets="All" />
   </ItemGroup>
 
   <!-- Code Analysis Dependencies -->
@@ -77,11 +77,11 @@
            in packages that consume this tool.
          - IncludeAssets lists all asset types (including 'analyzers' and 'buildtransitive') to ensure
            Roslyn analyzers and MSBuild targets are fully activated during the build. -->
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.302">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.400">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.31.0.145097">
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.32.0.713">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/test/DemaConsulting.SysML2Tools.Tests/DemaConsulting.SysML2Tools.Tests.csproj b/test/DemaConsulting.SysML2Tools.Tests/DemaConsulting.SysML2Tools.Tests.csproj
index ebc754f4..d064cd7b 100644
--- a/test/DemaConsulting.SysML2Tools.Tests/DemaConsulting.SysML2Tools.Tests.csproj
+++ b/test/DemaConsulting.SysML2Tools.Tests/DemaConsulting.SysML2Tools.Tests.csproj
@@ -27,13 +27,20 @@
 
   <!-- Test Framework Dependencies -->
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+    <!-- coverlet.MTP is coverlet's native Microsoft.Testing.Platform extension (the VSTest-only
+         coverlet.collector no longer runs under the MTP 'dotnet test' mode required by xunit.v3 4.0.0).
+         Child-element form configures both PrivateAssets and IncludeAssets:
+         - PrivateAssets="all" keeps this test-coverage tool out of any consuming project's dependencies.
+         - IncludeAssets lists all asset types (including 'build' and 'buildtransitive') to ensure the
+           extension's MSBuild targets are activated so coverage is collected during test runs. -->
+    <PackageReference Include="coverlet.MTP" Version="10.0.1">
       <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <IncludeAssets>compile; runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
+    <PackageReference Include="Microsoft.Testing.Extensions.TrxReport" Version="2.3.3" />
+    <PackageReference Include="xunit.v3" Version="4.0.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
@@ -41,11 +48,11 @@
 
   <!-- Code Analysis Dependencies -->
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.302">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.400">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.31.0.145097">
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.32.0.713">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
@@ -60,11 +67,4 @@
     <PackageReference Include="DemaConsulting.Rendering.Skia" Version="0.1.0" />
   </ItemGroup>
 
-  <!-- SkiaSharp Native Assets -->
-  <ItemGroup>
-    <PackageReference Include="SkiaSharp.NativeAssets.Win32" Version="4.150.0" Condition="$([MSBuild]::IsOSPlatform('Windows'))" />
-    <PackageReference Include="SkiaSharp.NativeAssets.Linux.NoDependencies" Version="4.150.0" Condition="$([MSBuild]::IsOSPlatform('Linux'))" />
-    <PackageReference Include="SkiaSharp.NativeAssets.macOS" Version="4.150.0" Condition="$([MSBuild]::IsOSPlatform('macOS'))" />
-  </ItemGroup>
-
 </Project>
diff --git a/test/DemaConsulting.SysML2Tools.Tool.Tests/DemaConsulting.SysML2Tools.Tool.Tests.csproj b/test/DemaConsulting.SysML2Tools.Tool.Tests/DemaConsulting.SysML2Tools.Tool.Tests.csproj
index 03e3e48f..05d844d5 100644
--- a/test/DemaConsulting.SysML2Tools.Tool.Tests/DemaConsulting.SysML2Tools.Tool.Tests.csproj
+++ b/test/DemaConsulting.SysML2Tools.Tool.Tests/DemaConsulting.SysML2Tools.Tool.Tests.csproj
@@ -27,17 +27,20 @@
 
   <!-- Test Framework Dependencies -->
   <ItemGroup>
-    <!-- coverlet.collector uses child-element form to configure both PrivateAssets and IncludeAssets:
+    <!-- coverlet.MTP is coverlet's native Microsoft.Testing.Platform extension (the VSTest-only
+         coverlet.collector no longer runs under the MTP 'dotnet test' mode required by xunit.v3 4.0.0).
+         Child-element form configures both PrivateAssets and IncludeAssets:
          - PrivateAssets="all" keeps this test-coverage tool out of any consuming project's dependencies.
          - IncludeAssets lists all asset types (including 'build' and 'buildtransitive') to ensure the
-           data collector MSBuild targets are activated so coverage is collected during test runs. -->
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+           extension's MSBuild targets are activated so coverage is collected during test runs. -->
+    <PackageReference Include="coverlet.MTP" Version="10.0.1">
       <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <IncludeAssets>compile; runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
+    <PackageReference Include="Microsoft.Testing.Extensions.TrxReport" Version="2.3.3" />
+    <PackageReference Include="xunit.v3" Version="4.0.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
@@ -50,11 +53,11 @@
            in any project that references this test project.
          - IncludeAssets lists all asset types (including 'analyzers' and 'buildtransitive') to ensure
            Roslyn analyzers and MSBuild targets are fully activated during the build. -->
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.302">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.400">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.31.0.145097">
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.32.0.713">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>