diff --git a/resources/backupTemplates/dotnet/~4/net6.0-isolated/item.nupkg b/resources/backupTemplates/dotnet/~4/net6.0-isolated/item.nupkg
index 28654c803..acfc42797 100644
Binary files a/resources/backupTemplates/dotnet/~4/net6.0-isolated/item.nupkg and b/resources/backupTemplates/dotnet/~4/net6.0-isolated/item.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net6.0-isolated/project.nupkg b/resources/backupTemplates/dotnet/~4/net6.0-isolated/project.nupkg
index 40f67f183..81c9b80e0 100644
Binary files a/resources/backupTemplates/dotnet/~4/net6.0-isolated/project.nupkg and b/resources/backupTemplates/dotnet/~4/net6.0-isolated/project.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net6.0/item.nupkg b/resources/backupTemplates/dotnet/~4/net6.0/item.nupkg
index 87b04df7a..68c858b39 100644
Binary files a/resources/backupTemplates/dotnet/~4/net6.0/item.nupkg and b/resources/backupTemplates/dotnet/~4/net6.0/item.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net6.0/project.nupkg b/resources/backupTemplates/dotnet/~4/net6.0/project.nupkg
index f571e603e..a14a12f92 100644
Binary files a/resources/backupTemplates/dotnet/~4/net6.0/project.nupkg and b/resources/backupTemplates/dotnet/~4/net6.0/project.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net7.0-isolated/item.nupkg b/resources/backupTemplates/dotnet/~4/net7.0-isolated/item.nupkg
index 28654c803..acfc42797 100644
Binary files a/resources/backupTemplates/dotnet/~4/net7.0-isolated/item.nupkg and b/resources/backupTemplates/dotnet/~4/net7.0-isolated/item.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net7.0-isolated/project.nupkg b/resources/backupTemplates/dotnet/~4/net7.0-isolated/project.nupkg
index 40f67f183..81c9b80e0 100644
Binary files a/resources/backupTemplates/dotnet/~4/net7.0-isolated/project.nupkg and b/resources/backupTemplates/dotnet/~4/net7.0-isolated/project.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net8.0-isolated/item.nupkg b/resources/backupTemplates/dotnet/~4/net8.0-isolated/item.nupkg
index 28654c803..acfc42797 100644
Binary files a/resources/backupTemplates/dotnet/~4/net8.0-isolated/item.nupkg and b/resources/backupTemplates/dotnet/~4/net8.0-isolated/item.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net8.0-isolated/project.nupkg b/resources/backupTemplates/dotnet/~4/net8.0-isolated/project.nupkg
index 40f67f183..81c9b80e0 100644
Binary files a/resources/backupTemplates/dotnet/~4/net8.0-isolated/project.nupkg and b/resources/backupTemplates/dotnet/~4/net8.0-isolated/project.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net9.0-isolated/item.nupkg b/resources/backupTemplates/dotnet/~4/net9.0-isolated/item.nupkg
new file mode 100644
index 000000000..acfc42797
Binary files /dev/null and b/resources/backupTemplates/dotnet/~4/net9.0-isolated/item.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/net9.0-isolated/project.nupkg b/resources/backupTemplates/dotnet/~4/net9.0-isolated/project.nupkg
new file mode 100644
index 000000000..81c9b80e0
Binary files /dev/null and b/resources/backupTemplates/dotnet/~4/net9.0-isolated/project.nupkg differ
diff --git a/resources/backupTemplates/dotnet/~4/version.txt b/resources/backupTemplates/dotnet/~4/version.txt
index 9529dc550..e6da41542 100644
--- a/resources/backupTemplates/dotnet/~4/version.txt
+++ b/resources/backupTemplates/dotnet/~4/version.txt
@@ -1 +1 @@
-4.83.0
\ No newline at end of file
+4.91.0
\ No newline at end of file
diff --git a/resources/backupTemplates/script/~4/version.txt b/resources/backupTemplates/script/~4/version.txt
index 9529dc550..e6da41542 100644
--- a/resources/backupTemplates/script/~4/version.txt
+++ b/resources/backupTemplates/script/~4/version.txt
@@ -1 +1 @@
-4.83.0
\ No newline at end of file
+4.91.0
\ No newline at end of file
diff --git a/src/templates/dotnet/executeDotnetTemplateCommand.ts b/src/templates/dotnet/executeDotnetTemplateCommand.ts
index 7de9bbf09..72b359a5a 100644
--- a/src/templates/dotnet/executeDotnetTemplateCommand.ts
+++ b/src/templates/dotnet/executeDotnetTemplateCommand.ts
@@ -61,7 +61,7 @@ async function getFramework(context: IActionContext, workingDirectory: string |
         }
 
         // Prioritize "LTS", then "Current", then "Preview"
-        const netVersions: string[] = ['6.0', '7.0', '8.0'];
+        const netVersions: string[] = ['6.0', '7.0', '8.0', '9.0'];
         const semVersions: SemVer[] = netVersions.map(v => semVerCoerce(v) as SemVer);
 
         let pickedVersion: SemVer | undefined;
diff --git a/test/updateBackupTemplates.ts b/test/updateBackupTemplates.ts
index 8a46a9bed..668169aec 100644
--- a/test/updateBackupTemplates.ts
+++ b/test/updateBackupTemplates.ts
@@ -34,6 +34,7 @@ suite('Backup templates', () => {
             { language: ProjectLanguage.CSharp, projectTemplateKey: 'net6.0-isolated', versions: [FuncVersion.v4] },
             { language: ProjectLanguage.CSharp, projectTemplateKey: 'net7.0-isolated', versions: [FuncVersion.v4] },
             { language: ProjectLanguage.CSharp, projectTemplateKey: 'net8.0-isolated', versions: [FuncVersion.v4] },
+            { language: ProjectLanguage.CSharp, projectTemplateKey: 'net9.0-isolated', versions: [FuncVersion.v4] },
             { language: ProjectLanguage.Java, versions: [FuncVersion.v4] }
         ];
 
diff --git a/tools/JsonCli/.vscode/tasks.json b/tools/JsonCli/.vscode/tasks.json
index 91b0e4933..664a69f4c 100644
--- a/tools/JsonCli/.vscode/tasks.json
+++ b/tools/JsonCli/.vscode/tasks.json
@@ -58,6 +58,22 @@
                 "${workspaceFolder}/src/Microsoft.TemplateEngine.JsonCli.csproj"
             ],
             "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish (9.0)",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "--configuration",
+                "Release",
+                "--framework",
+                "net9.0",
+                "--output",
+                "${workspaceFolder}/../../resources/dotnetJsonCli/net9.0/",
+                "${workspaceFolder}/src/Microsoft.TemplateEngine.JsonCli.csproj"
+            ],
+            "problemMatcher": "$msCompile"
         }
     ]
 }