diff --git a/Directory.Build.props b/Directory.Build.props
index 06c8bc29..d96fb719 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -26,8 +26,6 @@
     <LangVersion>latest</LangVersion>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <NeutralLanguage>en-US</NeutralLanguage>
-    <!-- TODO Re-enable when .NET 9 is stable -->
-    <NoWarn>$(NoWarn);NU5104</NoWarn>
     <Nullable>enable</Nullable>
     <PackageIcon></PackageIcon>
     <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
diff --git a/Directory.Packages.props b/Directory.Packages.props
index 133a9a3c..aff61af9 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -12,7 +12,7 @@
     <PackageVersion Include="coverlet.msbuild" Version="6.0.2" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" />
     <PackageVersion Include="MartinCostello.Logging.XUnit" Version="0.4.0" />
-    <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="9.0.0-rc.2.24474.3" />
+    <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="9.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageVersion Include="NSubstitute" Version="5.3.0" />
     <PackageVersion Include="ReportGenerator" Version="5.3.11" />
diff --git a/src/AwsLambdaTestServer/MartinCostello.Testing.AwsLambdaTestServer.csproj b/src/AwsLambdaTestServer/MartinCostello.Testing.AwsLambdaTestServer.csproj
index f4478417..c0ccb515 100644
--- a/src/AwsLambdaTestServer/MartinCostello.Testing.AwsLambdaTestServer.csproj
+++ b/src/AwsLambdaTestServer/MartinCostello.Testing.AwsLambdaTestServer.csproj
@@ -8,7 +8,7 @@
     <OutputType>Library</OutputType>
     <PackageId>MartinCostello.Testing.AwsLambdaTestServer</PackageId>
     <!-- TODO Update baseline version once .NET 9 support published -->
-    <PackageValidationBaselineVersion>0.7.0</PackageValidationBaselineVersion>
+    <PackageValidationBaselineVersion>0.8.1</PackageValidationBaselineVersion>
     <RootNamespace>MartinCostello.Testing.AwsLambdaTestServer</RootNamespace>
     <Summary>$(Description)</Summary>
     <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
@@ -24,7 +24,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.TestHost" />
     <PackageReference Update="Microsoft.AspNetCore.TestHost" VersionOverride="8.0.0" Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))" />
-    <PackageReference Update="Microsoft.AspNetCore.TestHost" VersionOverride="9.0.0-rc.2.24474.3" Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net9.0'))" />
+    <PackageReference Update="Microsoft.AspNetCore.TestHost" VersionOverride="9.0.0" Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net9.0'))" />
   </ItemGroup>
   <ItemGroup>
     <AdditionalFiles Include="PublicAPI\PublicAPI.Shipped.txt" />