diff --git a/.gitignore b/.gitignore
index c5305f08..5190392f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,6 +32,7 @@ PublishProfiles
 *.GhostDoc.xml
 *.log
 *.nupkg
+!.packages/*.nupkg
 *.opensdf
 *.[Pp]ublish.xml
 *.publishproj
diff --git a/.packages/Swashbuckle.AspNetCore.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..bc15faf0
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diff --git a/.packages/Swashbuckle.AspNetCore.Annotations.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.Annotations.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..1ec614f3
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diff --git a/.packages/Swashbuckle.AspNetCore.Annotations.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.Annotations.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..122cbc5d
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diff --git a/.packages/Swashbuckle.AspNetCore.ApiTesting.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.ApiTesting.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..553fb5be
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diff --git a/.packages/Swashbuckle.AspNetCore.ApiTesting.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.ApiTesting.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..15706586
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diff --git a/.packages/Swashbuckle.AspNetCore.ApiTesting.Xunit.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.ApiTesting.Xunit.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..80458dba
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diff --git a/.packages/Swashbuckle.AspNetCore.ApiTesting.Xunit.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.ApiTesting.Xunit.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..9d4fd327
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diff --git a/.packages/Swashbuckle.AspNetCore.Cli.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.Cli.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..ad89fc95
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diff --git a/.packages/Swashbuckle.AspNetCore.Cli.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.Cli.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..e5421902
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diff --git a/.packages/Swashbuckle.AspNetCore.Newtonsoft.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.Newtonsoft.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..be9aa678
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diff --git a/.packages/Swashbuckle.AspNetCore.Newtonsoft.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.Newtonsoft.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..00202010
Binary files /dev/null and b/.packages/Swashbuckle.AspNetCore.Newtonsoft.9.0.0-pr.3283.1370.snupkg differ
diff --git a/.packages/Swashbuckle.AspNetCore.ReDoc.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.ReDoc.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..1106f97b
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diff --git a/.packages/Swashbuckle.AspNetCore.ReDoc.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.ReDoc.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..98af00cb
Binary files /dev/null and b/.packages/Swashbuckle.AspNetCore.ReDoc.9.0.0-pr.3283.1370.snupkg differ
diff --git a/.packages/Swashbuckle.AspNetCore.Swagger.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.Swagger.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..9f293fed
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diff --git a/.packages/Swashbuckle.AspNetCore.Swagger.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.Swagger.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..0ff3e750
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diff --git a/.packages/Swashbuckle.AspNetCore.SwaggerGen.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.SwaggerGen.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..9d6ce3cb
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diff --git a/.packages/Swashbuckle.AspNetCore.SwaggerGen.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.SwaggerGen.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..1079f58d
Binary files /dev/null and b/.packages/Swashbuckle.AspNetCore.SwaggerGen.9.0.0-pr.3283.1370.snupkg differ
diff --git a/.packages/Swashbuckle.AspNetCore.SwaggerUI.9.0.0-pr.3283.1370.nupkg b/.packages/Swashbuckle.AspNetCore.SwaggerUI.9.0.0-pr.3283.1370.nupkg
new file mode 100644
index 00000000..69bb6d3d
Binary files /dev/null and b/.packages/Swashbuckle.AspNetCore.SwaggerUI.9.0.0-pr.3283.1370.nupkg differ
diff --git a/.packages/Swashbuckle.AspNetCore.SwaggerUI.9.0.0-pr.3283.1370.snupkg b/.packages/Swashbuckle.AspNetCore.SwaggerUI.9.0.0-pr.3283.1370.snupkg
new file mode 100644
index 00000000..7d8b5ea1
Binary files /dev/null and b/.packages/Swashbuckle.AspNetCore.SwaggerUI.9.0.0-pr.3283.1370.snupkg differ
diff --git a/NuGet.config b/NuGet.config
index 3d72cb4f..8aef45aa 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -4,6 +4,7 @@
     <clear />
     <add key="benchmarkdotnet" value="https://www.myget.org/F/benchmarkdotnet/api/v3/index.json" />
     <add key="domaindrivendev" value="https://www.myget.org/F/domaindrivendev/api/v3/index.json" />
+    <add key="local" value=".packages" />
     <add key="NuGet" value="https://api.nuget.org/v3/index.json" />
   </packageSources>
   <packageSourceMapping>
@@ -14,6 +15,9 @@
     <packageSource key="domaindrivendev">
       <package pattern="Swashbuckle.AspNetCore*" />
     </packageSource>
+    <packageSource key="local">
+      <package pattern="Swashbuckle.AspNetCore*" />
+    </packageSource>
     <packageSource key="NuGet">
       <package pattern="*" />
     </packageSource>
diff --git a/global.json b/global.json
index efdbd0d5..a7076365 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "10.0.100-preview.3.25201.16",
+    "version": "10.0.100-preview.4.25258.110",
     "allowPrerelease": false,
     "rollForward": "latestMajor"
   }
diff --git a/src/TodoApp/OpenApi/AspNetCore/AspNetCoreOpenApiEndpoints.cs b/src/TodoApp/OpenApi/AspNetCore/AspNetCoreOpenApiEndpoints.cs
index 8fc8d2e1..21a78cbd 100644
--- a/src/TodoApp/OpenApi/AspNetCore/AspNetCoreOpenApiEndpoints.cs
+++ b/src/TodoApp/OpenApi/AspNetCore/AspNetCoreOpenApiEndpoints.cs
@@ -46,11 +46,12 @@ public static IServiceCollection AddAspNetCoreOpenApi(this IServiceCollection se
                     Type = SecuritySchemeType.Http,
                 };
 
-                var reference = new OpenApiSecuritySchemeReference("Bearer", document);
+                var referenceId = "Bearer";
+                var reference = new OpenApiSecuritySchemeReference(referenceId, document);
 
                 document.Components ??= new();
-                document.Components.SecuritySchemes ??= new Dictionary<string, IOpenApiSecurityScheme>();
-                document.Components.SecuritySchemes[reference.Reference.Id] = scheme;
+                document.Components.SecuritySchemes ??= [];
+                document.Components.SecuritySchemes[referenceId] = scheme;
                 document.Security ??= [];
                 document.Security.Add(new() { [reference] = [] });
 
diff --git a/src/TodoApp/OpenApi/ExamplesProcessor.cs b/src/TodoApp/OpenApi/ExamplesProcessor.cs
index ed8dc9bf..f5ff54bc 100644
--- a/src/TodoApp/OpenApi/ExamplesProcessor.cs
+++ b/src/TodoApp/OpenApi/ExamplesProcessor.cs
@@ -94,7 +94,10 @@ private static void TryAddRequestExamples(
         ApiDescription description,
         IList<IOpenApiExampleMetadata> examples)
     {
-        if (!body.Content.TryGetValue("application/json", out var mediaType) || mediaType.Example is not null)
+        if (body is null ||
+            body.Content is null ||
+            !body.Content.TryGetValue("application/json", out var mediaType) ||
+            mediaType.Example is not null)
         {
             return;
         }
@@ -131,7 +134,7 @@ private static void TryAddResponseExamples(
             foreach (var responseFormat in schemaResponse.ApiResponseFormats)
             {
                 if (responses.TryGetValue(schemaResponse.StatusCode.ToString(CultureInfo.InvariantCulture), out var response) &&
-                    response.Content.TryGetValue(responseFormat.MediaType, out var mediaType))
+                    response.Content?.TryGetValue(responseFormat.MediaType, out var mediaType) is true)
                 {
                     mediaType.Example ??= (metadata ?? examples.SingleOrDefault((p) => p.SchemaType == schemaResponse.Type))?.GenerateExample(Context);
                 }
diff --git a/src/TodoApp/TodoApp.csproj b/src/TodoApp/TodoApp.csproj
index f6462c4e..ea2856f1 100644
--- a/src/TodoApp/TodoApp.csproj
+++ b/src/TodoApp/TodoApp.csproj
@@ -14,14 +14,14 @@
     <TypeScriptToolsVersion>latest</TypeScriptToolsVersion>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.0-preview.3.25172.1" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.0-preview.3.25171.6" />
-    <PackageReference Include="Microsoft.Extensions.ApiDescription.Server" Version="10.0.0-preview.3.25172.1" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.OpenApi" Version="2.0.0-preview.11" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.0-preview.4.25258.110" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.0-preview.4.25258.110" />
+    <PackageReference Include="Microsoft.Extensions.ApiDescription.Server" Version="10.0.0-preview.4.25258.110" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.OpenApi" Version="2.0.0-preview.17" />
     <PackageReference Include="Microsoft.TypeScript.MSBuild" Version="5.8.3" PrivateAssets="all" />
     <PackageReference Include="NSwag.AspNetCore" Version="14.4.0" />
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="9.0.0-pr.3283.1282" />
-    <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="9.0.0-pr.3283.1282" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="9.0.0-pr.3283.1370" />
+    <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="9.0.0-pr.3283.1370" />
   </ItemGroup>
   <ItemGroup>
     <Content Update="package.json;package-lock.json;tsconfig.json" CopyToPublishDirectory="Never" />
diff --git a/tests/TodoApp.Tests/OpenApiTests.cs b/tests/TodoApp.Tests/OpenApiTests.cs
index 8097ce35..06a2f654 100644
--- a/tests/TodoApp.Tests/OpenApiTests.cs
+++ b/tests/TodoApp.Tests/OpenApiTests.cs
@@ -65,7 +65,10 @@ public async Task Schema_Has_No_Validation_Warnings(string schemaUrl)
         // Assert
         var actual = await OpenApiDocument.LoadAsync(schema, "json", cancellationToken: TestContext.Current.CancellationToken);
 
+        Assert.NotNull(actual);
+        Assert.NotNull(actual.Diagnostic);
         Assert.Empty(actual.Diagnostic.Errors);
+        Assert.NotNull(actual.Document);
 
         var errors = actual.Document.Validate(ruleSet);
 
diff --git a/tests/TodoApp.Tests/TodoApp.Tests.csproj b/tests/TodoApp.Tests/TodoApp.Tests.csproj
index 63602b21..d3e93996 100644
--- a/tests/TodoApp.Tests/TodoApp.Tests.csproj
+++ b/tests/TodoApp.Tests/TodoApp.Tests.csproj
@@ -10,7 +10,7 @@
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="GitHubActionsTestLogger" Version="2.4.1" />
     <PackageReference Include="MartinCostello.Logging.XUnit.v3" Version="0.5.1" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.0-preview.3.25172.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.0-preview.4.25258.110" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageReference Include="Microsoft.OpenApi.Readers" Version="2.0.0-preview.11" />
     <PackageReference Include="Microsoft.Playwright" Version="1.52.0" />