diff --git a/csharp/capitalize-string/src/CapitalizeString/CapitalizeString.csproj b/csharp/capitalize-string/src/CapitalizeString/CapitalizeString.csproj
index 0fd3ad2da3..6a45cf7c79 100644
--- a/csharp/capitalize-string/src/CapitalizeString/CapitalizeString.csproj
+++ b/csharp/capitalize-string/src/CapitalizeString/CapitalizeString.csproj
@@ -2,13 +2,13 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <!-- Roll forward to future major versions of the netcoreapp as needed -->
     <RollForward>Major</RollForward>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Amazon.CDK.Lib" Version="2.0.0" />
+    <PackageReference Include="Amazon.CDK.Lib" Version="2.173.4" />
     <PackageReference Include="Constructs" Version="10.0.0" />
   </ItemGroup>
 
diff --git a/csharp/capitalize-string/src/CapitalizeString/CapitalizeStringStack.cs b/csharp/capitalize-string/src/CapitalizeString/CapitalizeStringStack.cs
index 04a61f6ac7..b985bdd77d 100644
--- a/csharp/capitalize-string/src/CapitalizeString/CapitalizeStringStack.cs
+++ b/csharp/capitalize-string/src/CapitalizeString/CapitalizeStringStack.cs
@@ -10,7 +10,7 @@ internal CapitalizeStringStack(Construct scope, string id, IStackProps props = n
         {
             Function fn = new Function(this, "capitalizestring", new FunctionProps
             {
-                Runtime = Runtime.DOTNET_CORE_3_1,
+                Runtime = Runtime.DOTNET_8,
                 Code = Code.FromAsset("./CapitalizeStringHandler/src/CapitalizeStringHandler/bin/Release/net6.0/publish"),
                 Handler = "CapitalizeStringHandler::CapitalizeStringHandler.Function::FunctionHandler"
             });