diff --git a/ModernUO.Serialization.Generator.Benchmarks/ModernUO.Serialization.Generator.Benchmarks.csproj b/ModernUO.Serialization.Generator.Benchmarks/ModernUO.Serialization.Generator.Benchmarks.csproj
index 57b8fb4..4a2e898 100644
--- a/ModernUO.Serialization.Generator.Benchmarks/ModernUO.Serialization.Generator.Benchmarks.csproj
+++ b/ModernUO.Serialization.Generator.Benchmarks/ModernUO.Serialization.Generator.Benchmarks.csproj
@@ -9,10 +9,10 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="BenchmarkDotNet" Version="0.15.4" />
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" />
+        <PackageReference Include="BenchmarkDotNet" Version="0.15.8" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" />
         <!-- The generator's analyzer-private dependency does not flow transitively. -->
-        <PackageReference Include="Humanizer.Core" Version="3.0.1" />
+        <PackageReference Include="Humanizer.Core" Version="3.0.10" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/ModernUO.Serialization.Generator.DiffTool/ModernUO.Serialization.Generator.DiffTool.csproj b/ModernUO.Serialization.Generator.DiffTool/ModernUO.Serialization.Generator.DiffTool.csproj
index e5e61b8..9a9a80c 100644
--- a/ModernUO.Serialization.Generator.DiffTool/ModernUO.Serialization.Generator.DiffTool.csproj
+++ b/ModernUO.Serialization.Generator.DiffTool/ModernUO.Serialization.Generator.DiffTool.csproj
@@ -14,7 +14,8 @@
 
     <ItemGroup>
         <!-- Same MSBuildLocator guard the schema generator uses. -->
-        <PackageReference Include="Microsoft.Build.Framework" Version="18.0.2" ExcludeAssets="runtime" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.Build.Framework" Version="18.9.6" ExcludeAssets="runtime" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.NET.StringTools" Version="18.9.6" ExcludeAssets="runtime" PrivateAssets="all" />
     </ItemGroup>
 
 </Project>
diff --git a/ModernUO.Serialization.Generator.Tests/ModernUO.Serialization.Generator.Tests.csproj b/ModernUO.Serialization.Generator.Tests/ModernUO.Serialization.Generator.Tests.csproj
index 946b635..6acae3c 100644
--- a/ModernUO.Serialization.Generator.Tests/ModernUO.Serialization.Generator.Tests.csproj
+++ b/ModernUO.Serialization.Generator.Tests/ModernUO.Serialization.Generator.Tests.csproj
@@ -10,15 +10,15 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" />
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.0.0" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.9.0" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
         <PackageReference Include="xunit" Version="2.9.3" />
-        <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+        <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="coverlet.collector" Version="6.0.4">
+        <PackageReference Include="coverlet.collector" Version="10.0.1">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
diff --git a/ModernUO.Serialization.Generator/ModernUO.Serialization.Generator.csproj b/ModernUO.Serialization.Generator/ModernUO.Serialization.Generator.csproj
index 501cbc5..b85a013 100755
--- a/ModernUO.Serialization.Generator/ModernUO.Serialization.Generator.csproj
+++ b/ModernUO.Serialization.Generator/ModernUO.Serialization.Generator.csproj
@@ -19,12 +19,15 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="5.9.0" PrivateAssets="all" />
+        <!-- The compiler reference sets the MINIMUM SDK consumers can build with (CS9057 on
+             anything older). Keep it at the lowest version whose APIs the generator needs;
+             do not bump it with the other dependencies. -->
         <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" PrivateAssets="all" />
-        <PackageReference Include="Humanizer.Core" Version="3.0.1" GeneratePathProperty="true" PrivateAssets="all" />
-        <PackageReference Include="System.Text.Json" Version="10.0.1" GeneratePathProperty="true" PrivateAssets="all" />
-        <PackageReference Include="System.Text.Encodings.Web" Version="10.0.1" GeneratePathProperty="true" PrivateAssets="all" />
-        <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.1" GeneratePathProperty="true" PrivateAssets="all" />
+        <PackageReference Include="Humanizer.Core" Version="3.0.10" GeneratePathProperty="true" PrivateAssets="all" />
+        <PackageReference Include="System.Text.Json" Version="10.0.11" GeneratePathProperty="true" PrivateAssets="all" />
+        <PackageReference Include="System.Text.Encodings.Web" Version="10.0.11" GeneratePathProperty="true" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.11" GeneratePathProperty="true" PrivateAssets="all" />
 
         <None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
 
diff --git a/ModernUO.Serialization.SchemaGenerator/ModernUO.Serialization.SchemaGenerator.csproj b/ModernUO.Serialization.SchemaGenerator/ModernUO.Serialization.SchemaGenerator.csproj
index 477f922..655290d 100755
--- a/ModernUO.Serialization.SchemaGenerator/ModernUO.Serialization.SchemaGenerator.csproj
+++ b/ModernUO.Serialization.SchemaGenerator/ModernUO.Serialization.SchemaGenerator.csproj
@@ -20,13 +20,15 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Humanizer.Core" Version="3.0.1" />
+        <PackageReference Include="Humanizer.Core" Version="3.0.10" />
         <PackageReference Include="Microsoft.Build.Locator" Version="1.11.2" />
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.0.0" />
-        <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="5.0.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.9.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="5.9.0" />
         <PackageReference Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.1" />
-        <!-- Needed for Build.Locator but should not be copied to output -->
-        <PackageReference Include="Microsoft.Build.Framework" Version="18.0.2" ExcludeAssets="runtime" />
+        <!-- Needed for Build.Locator but must not be copied to output: deployed MSBuild-family
+             assemblies would load instead of the discovered SDK's and break solution loading. -->
+        <PackageReference Include="Microsoft.Build.Framework" Version="18.9.6" ExcludeAssets="runtime" PrivateAssets="all" />
+        <PackageReference Include="Microsoft.NET.StringTools" Version="18.9.6" ExcludeAssets="runtime" PrivateAssets="all" />
         <ProjectReference Include="..\ModernUO.Serialization.Generator\ModernUO.Serialization.Generator.csproj" />
     </ItemGroup>
 </Project>