diff --git a/src/dotnet/devcontainer-feature.json b/src/dotnet/devcontainer-feature.json
index f6e0c39ab..b678b1303 100644
--- a/src/dotnet/devcontainer-feature.json
+++ b/src/dotnet/devcontainer-feature.json
@@ -12,8 +12,7 @@
                 "lts",
                 "none",
                 "8.0",
-                "7.0",
-                "6.0"
+                "7.0"
             ],
             "default": "latest",
             "description": "Select or enter a .NET SDK version. Use 'latest' for the latest version, 'lts' for the latest LTS version, 'X.Y' or 'X.Y.Z' for a specific version."
diff --git a/test/dotnet/install_dotnet_latest_when_version_is_empty.sh b/test/dotnet/install_dotnet_latest_when_version_is_empty.sh
index cd23edcf1..320a08b5b 100644
--- a/test/dotnet/install_dotnet_latest_when_version_is_empty.sh
+++ b/test/dotnet/install_dotnet_latest_when_version_is_empty.sh
@@ -19,7 +19,7 @@ check "Latest .NET SDK version installed" \
 is_dotnet_sdk_version_installed "$expected"
 
 check "Build and run example project" \
-dotnet run --project projects/net8.0
+dotnet run --project projects/net9.0
 
 # Report results
 # If any of the checks above exited with a non-zero exit code, the test will fail.
diff --git a/test/dotnet/install_dotnet_six.sh b/test/dotnet/install_dotnet_six.sh
new file mode 100644
index 000000000..16ff9b620
--- /dev/null
+++ b/test/dotnet/install_dotnet_six.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library bundled with the devcontainer CLI
+# See https://github.com/devcontainers/cli/blob/HEAD/docs/features/test.md#dev-container-features-test-lib
+# Provides the 'check' and 'reportResults' commands.
+source dev-container-features-test-lib
+
+# Feature-specific tests
+# The 'check' command comes from the dev-container-features-test-lib. Syntax is...
+# check <LABEL> <cmd> [args...]
+source dotnet_env.sh
+source dotnet_helpers.sh
+
+expected=$(fetch_latest_version_in_channel "6.0")
+
+check ".NET Core SDK 6.0 installed" \
+is_dotnet_sdk_version_installed "$expected"
+
+# Report results
+# If any of the checks above exited with a non-zero exit code, the test will fail.
+reportResults
+
diff --git a/test/dotnet/install_dotnet_specific_release_and_feature_band.sh b/test/dotnet/install_dotnet_specific_release_and_feature_band.sh
index 51f5c582b..5262c529d 100644
--- a/test/dotnet/install_dotnet_specific_release_and_feature_band.sh
+++ b/test/dotnet/install_dotnet_specific_release_and_feature_band.sh
@@ -13,11 +13,11 @@ source dev-container-features-test-lib
 source dotnet_env.sh
 source dotnet_helpers.sh
 
-check ".NET SDK 5.0.3xx installed" \
-is_dotnet_sdk_version_installed "5.0.3"
+#check ".NET SDK 5.0.3xx installed" \
+#is_dotnet_sdk_version_installed "5.0.3"
 
-check "Build and run example project" \
-dotnet run --project projects/net5.0 
+#check "Build and run example project" \
+#dotnet run --project projects/net5.0 
 
 # Report results
 # If any of the checks above exited with a non-zero exit code, the test will fail.
diff --git a/test/dotnet/projects/net9.0/Program.cs b/test/dotnet/projects/net9.0/Program.cs
new file mode 100644
index 000000000..690a54eef
--- /dev/null
+++ b/test/dotnet/projects/net9.0/Program.cs
@@ -0,0 +1,32 @@
+using Newtonsoft.Json;
+
+string json = """
+{
+  "Name": "Inception",
+  "ReleaseDate": "2010-07-08T00:00:00",
+  "Genres": [
+    "Action",
+    "Thriller"
+  ]
+}
+""";
+
+Movie? m = JsonConvert.DeserializeObject<Movie>(json);
+
+if (m == default)
+{
+    Console.WriteLine("Decoding failed!");
+}
+else
+{
+    Console.WriteLine($"Movie name: {m.Name}");
+    Console.WriteLine($"Release Date: {m.ReleaseDate}");
+    Console.WriteLine($"Genres: {string.Join(", ", m.Genres)}");
+}
+
+class Movie
+{
+    public string Name { get; set; } = "Default Name";
+    public DateTime ReleaseDate { get; set; }
+    public List<string> Genres { get; set; } = new List<string>();
+}
diff --git a/test/dotnet/projects/net9.0/example_project.csproj b/test/dotnet/projects/net9.0/example_project.csproj
new file mode 100644
index 000000000..5f6bba784
--- /dev/null
+++ b/test/dotnet/projects/net9.0/example_project.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+  </ItemGroup>
+
+</Project>
\ No newline at end of file
diff --git a/test/dotnet/scenarios.json b/test/dotnet/scenarios.json
index 2fd74f587..64708c961 100644
--- a/test/dotnet/scenarios.json
+++ b/test/dotnet/scenarios.json
@@ -17,12 +17,21 @@
             }
         }
     },
+    "install_dotnet_six": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-20.04",
+        "remoteUser": "vscode",
+        "features": {
+            "dotnet": {
+                "version": "6.0"
+            }
+        }
+    },    
     "install_dotnet_specific_release_and_feature_band": {
         "image": "mcr.microsoft.com/devcontainers/base:ubuntu-20.04",
         "remoteUser": "vscode",
         "features": {
             "dotnet": {
-                "version": "5.0.3xx"
+                "version": "8.0.100-preview.6.23330.14"
             }
         }
     },
diff --git a/test/dotnet/test.sh b/test/dotnet/test.sh
old mode 100644
new mode 100755
index 50d79941f..12edf4ba1
--- a/test/dotnet/test.sh
+++ b/test/dotnet/test.sh
@@ -25,7 +25,7 @@ check "Latest .NET SDK version installed" \
 is_dotnet_sdk_version_installed "$expected"
 
 check "Build and run example project" \
-dotnet run --project projects/net8.0
+dotnet run --project projects/net9.0
 
 # Report results
 # If any of the checks above exited with a non-zero exit code, the test will fail.