diff --git a/nuget/helpers/lib/NuGetUpdater/Directory.Common.props b/nuget/helpers/lib/NuGetUpdater/Directory.Common.props
index 7e6d11c8964..e74b76960ef 100644
--- a/nuget/helpers/lib/NuGetUpdater/Directory.Common.props
+++ b/nuget/helpers/lib/NuGetUpdater/Directory.Common.props
@@ -9,7 +9,7 @@
             NuGetUpdater\NuGetUpdater.Core\FrameworkChecker\SupportedFrameworks.cs
       2. Update tests as needed at `NuGetUpdater\NuGetUpdater.Core.Test\FrameworkChecker\CompatibilityCheckerFacts.cs`
     -->
-    <CommonTargetFramework>net8.0</CommonTargetFramework>
+    <CommonTargetFramework>net9.0</CommonTargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <UseArtifactsOutput>true</UseArtifactsOutput>
     <ArtifactsPath>$(MSBuildThisFileDirectory)artifacts</ArtifactsPath>
diff --git a/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Cli.Test/EntryPointTests.Update.cs b/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Cli.Test/EntryPointTests.Update.cs
index b2b981bf43b..03d5af843b5 100644
--- a/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Cli.Test/EntryPointTests.Update.cs
+++ b/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Cli.Test/EntryPointTests.Update.cs
@@ -353,7 +353,6 @@ await File.WriteAllTextAsync(projectPath, """
                 """);
             var executableName = Path.Join(Path.GetDirectoryName(GetType().Assembly.Location), "NuGetUpdater.Cli.dll");
             var executableArgs = string.Join(" ",
-            [
                 executableName,
                 "update",
                 "--repo-root",
@@ -366,8 +365,7 @@ await File.WriteAllTextAsync(projectPath, """
                 "13.0.1",
                 "--previous-version",
                 "7.0.1",
-                "--verbose"
-            ]);
+                "--verbose");
 
             // verify base run
             var workingDirectory = tempDir.DirectoryPath;
diff --git a/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/MockNuGetPackage.cs b/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/MockNuGetPackage.cs
index 66a5c830f68..afaae3ecc1f 100644
--- a/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/MockNuGetPackage.cs
+++ b/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/MockNuGetPackage.cs
@@ -391,6 +391,7 @@ public static MockNuGetPackage WellKnownReferencePackage(string packageName, str
             WellKnownReferencePackage("Microsoft.AspNetCore.App", "net6.0"),
             WellKnownReferencePackage("Microsoft.AspNetCore.App", "net7.0"),
             WellKnownReferencePackage("Microsoft.AspNetCore.App", "net8.0"),
+            WellKnownReferencePackage("Microsoft.AspNetCore.App", "net9.0"),
             WellKnownReferencePackage("Microsoft.NETCore.App", "net6.0",
             [
                 ("data/FrameworkList.xml", Encoding.UTF8.GetBytes("""
@@ -412,9 +413,17 @@ public static MockNuGetPackage WellKnownReferencePackage(string packageName, str
                     </FileList>
                     """))
             ]),
+            WellKnownReferencePackage("Microsoft.NETCore.App", "net9.0",
+            [
+                ("data/FrameworkList.xml", Encoding.UTF8.GetBytes("""
+                    <FileList TargetFrameworkIdentifier=".NETCoreApp" TargetFrameworkVersion="9.0" FrameworkName="Microsoft.NETCore.App" Name=".NET Runtime">
+                    </FileList>
+                    """))
+            ]),
             WellKnownReferencePackage("Microsoft.WindowsDesktop.App", "net6.0"),
             WellKnownReferencePackage("Microsoft.WindowsDesktop.App", "net7.0"),
             WellKnownReferencePackage("Microsoft.WindowsDesktop.App", "net8.0"),
+            WellKnownReferencePackage("Microsoft.WindowsDesktop.App", "net9.0"),
         ];
     }
 }
diff --git a/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/Update/UpdateWorkerTests.Sdk.cs b/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/Update/UpdateWorkerTests.Sdk.cs
index 71972202c82..a5883731a4d 100644
--- a/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/Update/UpdateWorkerTests.Sdk.cs
+++ b/nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/Update/UpdateWorkerTests.Sdk.cs
@@ -16,6 +16,7 @@ public class Sdk : UpdateWorkerTestBase
         [InlineData("net472")]
         [InlineData("net7.0")]
         [InlineData("net8.0")]
+        [InlineData("net9.0")]
         public async Task UpdateVersionAttribute_InProjectFile_ForPackageReferenceInclude(string tfm)
         {
             // update Some.Package from 9.0.1 to 13.0.1
diff --git a/nuget/helpers/lib/NuGetUpdater/global.json b/nuget/helpers/lib/NuGetUpdater/global.json
index 04c1f50d7cc..32ee2b04c85 100644
--- a/nuget/helpers/lib/NuGetUpdater/global.json
+++ b/nuget/helpers/lib/NuGetUpdater/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.401",
+    "version": "9.0.100-rc.1.24452.12",
     "rollForward": "latestMinor"
   }
 }
\ No newline at end of file