diff --git a/eng/Versions.props b/eng/Versions.props
index 56574443865..f1166235466 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -2,8 +2,8 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Project>
   <PropertyGroup>
-    <VersionPrefix>17.8.0</VersionPrefix>
-    <PackageValidationBaselineVersion>17.7.0</PackageValidationBaselineVersion>
+    <VersionPrefix>17.9.0</VersionPrefix>
+    <PackageValidationBaselineVersion>17.8.0-preview-23471-08</PackageValidationBaselineVersion>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
     <DotNetUseShippingVersions>true</DotNetUseShippingVersions>
diff --git a/global.json b/global.json
index d9967b3a53d..7a0263bee6b 100644
--- a/global.json
+++ b/global.json
@@ -1,15 +1,15 @@
 {
-  "sdk": {
-    "allowPrerelease": true
-  },
-  "tools": {
-    "dotnet": "8.0.100-preview.7.23376.3",
-    "vs": {
-      "version": "17.6.0"
+    "sdk": {
+        "allowPrerelease": true
     },
-    "xcopy-msbuild": "17.6.0-2"
-  },
-  "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.23425.2"
-  }
+    "tools": {
+        "dotnet": "8.0.100-preview.7.23376.3",
+        "vs": {
+            "version": "17.6.0"
+        },
+        "xcopy-msbuild": "17.6.0-2"
+    },
+    "msbuild-sdks": {
+        "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.23425.2"
+    }
 }
diff --git a/src/Build/Microsoft.Build.csproj b/src/Build/Microsoft.Build.csproj
index 9a5b1175b0e..db15f2e0ced 100644
--- a/src/Build/Microsoft.Build.csproj
+++ b/src/Build/Microsoft.Build.csproj
@@ -26,6 +26,11 @@
     <NoWarn>$(NoWarn);NU5104</NoWarn>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <ApiCompatPreserveUnnecessarySuppressions>true</ApiCompatPreserveUnnecessarySuppressions>
+    <ApiCompatPermitUnnecessarySuppressions>true</ApiCompatPermitUnnecessarySuppressions>
+  </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Framework\Microsoft.Build.Framework.csproj" />
     <ProjectReference Include="..\StringTools\StringTools.csproj" />
diff --git a/src/Framework/Microsoft.Build.Framework.csproj b/src/Framework/Microsoft.Build.Framework.csproj
index c0da0474e6c..1c044599152 100644
--- a/src/Framework/Microsoft.Build.Framework.csproj
+++ b/src/Framework/Microsoft.Build.Framework.csproj
@@ -27,6 +27,11 @@
     <PackageReference Include="Microsoft.Win32.Registry" />
   </ItemGroup>
 
+  <PropertyGroup>
+    <ApiCompatPreserveUnnecessarySuppressions>true</ApiCompatPreserveUnnecessarySuppressions>
+    <ApiCompatPermitUnnecessarySuppressions>true</ApiCompatPermitUnnecessarySuppressions>
+  </PropertyGroup>
+
   <ItemGroup>
     <Compile Include="..\Shared\Constants.cs">
       <Link>Shared\Constants.cs</Link>
diff --git a/src/Tasks/Microsoft.Build.Tasks.csproj b/src/Tasks/Microsoft.Build.Tasks.csproj
index e11a7698f31..c2f5e698f87 100644
--- a/src/Tasks/Microsoft.Build.Tasks.csproj
+++ b/src/Tasks/Microsoft.Build.Tasks.csproj
@@ -19,6 +19,11 @@
     <EnablePackageValidation>true</EnablePackageValidation>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <ApiCompatPreserveUnnecessarySuppressions>true</ApiCompatPreserveUnnecessarySuppressions>
+    <ApiCompatPermitUnnecessarySuppressions>true</ApiCompatPermitUnnecessarySuppressions>
+  </PropertyGroup>
+
   <ItemGroup>
     <EmbeddedResource Include="system.design\system.design.txt">
       <Type>Resx</Type>
diff --git a/src/Utilities/Microsoft.Build.Utilities.csproj b/src/Utilities/Microsoft.Build.Utilities.csproj
index 5b9a22eba36..af17ff082a7 100644
--- a/src/Utilities/Microsoft.Build.Utilities.csproj
+++ b/src/Utilities/Microsoft.Build.Utilities.csproj
@@ -18,6 +18,11 @@
     <EnablePackageValidation>true</EnablePackageValidation>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <ApiCompatPreserveUnnecessarySuppressions>true</ApiCompatPreserveUnnecessarySuppressions>
+    <ApiCompatPermitUnnecessarySuppressions>true</ApiCompatPermitUnnecessarySuppressions>
+  </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Framework\Microsoft.Build.Framework.csproj" />
     <ProjectReference Include="..\StringTools\StringTools.csproj" />