diff --git a/.autover/changes/4fa617cf-36b8-4ac7-a4e8-18e3aed7e9b2.json b/.autover/changes/4fa617cf-36b8-4ac7-a4e8-18e3aed7e9b2.json
new file mode 100644
index 000000000..86da8c575
--- /dev/null
+++ b/.autover/changes/4fa617cf-36b8-4ac7-a4e8-18e3aed7e9b2.json
@@ -0,0 +1,12 @@
+{
+  "Projects": [
+    {
+      "Name": "Amazon.Lambda.TestTool",
+      "Type": "Patch",
+      "ChangelogMessages": [
+        "Add SSO dependencies to support credential profiles that are using SSO",
+        "Update version of AWS SDK for .NET to V4"
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Amazon.Lambda.TestTool.csproj b/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Amazon.Lambda.TestTool.csproj
index 030d3731b..6b3fb0f90 100644
--- a/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Amazon.Lambda.TestTool.csproj
+++ b/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Amazon.Lambda.TestTool.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <Import Project="..\..\..\..\buildtools\common.props" />
   <PropertyGroup>
@@ -27,9 +27,11 @@
 
   <ItemGroup>
     <PackageReference Include="Amazon.Lambda.SQSEvents" Version="2.2.0" />
-    <PackageReference Include="AWSSDK.Extensions.NETCore.Setup" Version="3.7.400" />
-    <PackageReference Include="AWSSDK.Lambda" Version="3.7.411.17" />
-    <PackageReference Include="AWSSDK.SQS" Version="3.7.400.109" />
+    <PackageReference Include="AWSSDK.Extensions.NETCore.Setup" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.Lambda" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.SQS" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.SSO" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.SSOOIDC" Version="4.0.0" />
     <PackageReference Include="Spectre.Console" Version="0.49.1" />
     <PackageReference Include="Spectre.Console.Cli" Version="0.49.1" />
     <PackageReference Include="Amazon.Lambda.APIGatewayEvents" Version="2.7.1" />
diff --git a/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Program.cs b/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Program.cs
index 4dd25fbc9..6c27a51e6 100644
--- a/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Program.cs
+++ b/Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Program.cs
@@ -7,6 +7,9 @@
 using Amazon.Lambda.TestTool.Services;
 using Spectre.Console.Cli;
 
+// Till we do the full inspection for collection maintain the S3 behavior for initializing collections.
+Amazon.AWSConfigs.InitializeCollections = true;
+
 var serviceCollection = new ServiceCollection();
 
 serviceCollection.AddCustomServices();
diff --git a/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.IntegrationTests/Amazon.Lambda.TestTool.IntegrationTests.csproj b/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.IntegrationTests/Amazon.Lambda.TestTool.IntegrationTests.csproj
index 92b0900bf..cedf28781 100644
--- a/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.IntegrationTests/Amazon.Lambda.TestTool.IntegrationTests.csproj
+++ b/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.IntegrationTests/Amazon.Lambda.TestTool.IntegrationTests.csproj
@@ -11,17 +11,17 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Amazon.Lambda.Core" Version="2.5.0" />
-    <PackageReference Include="Amazon.Lambda.RuntimeSupport" Version="1.12.3" />
+    <PackageReference Include="Amazon.Lambda.Core" Version="2.5.1" />
+    <PackageReference Include="Amazon.Lambda.RuntimeSupport" Version="1.13.0" />
     <PackageReference Include="Amazon.Lambda.Serialization.SystemTextJson" Version="2.4.4" />
     <PackageReference Include="Amazon.Lambda.APIGatewayEvents" Version="2.7.1" />
-    <PackageReference Include="AWSSDK.APIGateway" Version="3.7.401.19" />
-    <PackageReference Include="AWSSDK.CloudFormation" Version="3.7.401.22" />
-	  <PackageReference Include="AWSSDK.IdentityManagement" Version="3.7.403.24" />
-    <PackageReference Include="AWSSDK.ApiGatewayV2" Version="3.7.400.75" />
-    <PackageReference Include="AWSSDK.Lambda" Version="3.7.411.18" />
-    <PackageReference Include="AWSSDK.SecurityToken" Version="3.7.401.24" />
-    <PackageReference Include="AWSSDK.SQS" Version="3.7.400.110" />
+    <PackageReference Include="AWSSDK.APIGateway" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.CloudFormation" Version="4.0.0" />
+	  <PackageReference Include="AWSSDK.IdentityManagement" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.ApiGatewayV2" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.Lambda" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.SecurityToken" Version="4.0.0" />
+    <PackageReference Include="AWSSDK.SQS" Version="4.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="9.0.0" />
diff --git a/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/Amazon.Lambda.TestTool.UnitTests.csproj b/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/Amazon.Lambda.TestTool.UnitTests.csproj
index fd1b0855a..fd3d5290d 100644
--- a/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/Amazon.Lambda.TestTool.UnitTests.csproj
+++ b/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/Amazon.Lambda.TestTool.UnitTests.csproj
@@ -12,9 +12,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Amazon.Lambda.RuntimeSupport" Version="1.12.3" />
+    <PackageReference Include="Amazon.Lambda.RuntimeSupport" Version="1.13.0" />
     <PackageReference Include="Amazon.Lambda.Serialization.SystemTextJson" Version="2.4.4" />
-    <PackageReference Include="AWSSDK.Lambda" Version="3.7.411.18" />
+    <PackageReference Include="AWSSDK.Lambda" Version="4.0.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>