diff --git a/CHANGELOG.md b/CHANGELOG.md
index f734ab9e4..8277d5355 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## Release 2026-02-04
+
+### Amazon.Lambda.Core (2.8.1)
+* Add the InternalsVisibleToAttribute to the renamed version of Amazon.Lambda.RuntimeSupport embedded with the Lambda Test Tool
+### Amazon.Lambda.RuntimeSupport (1.14.2)
+* Add defensive checks for scenarios where a Lambda function uses an older Amazon.Lambda.Core together with the renamed Amazon.Lambda.RuntimeSupport.TestTool assembly embedded in the Lambda Test Tool
+### Amazon.Lambda.TestTool (0.12.0)
+* Rename embedded Amazon.Lambda.RuntimeSupport assembly to Amazon.Lambda.RuntimeSupport.TestTool to avoid conflicts with Lambda function that might include Amazon.Lambda.RuntimeSupport
+
 ## Release 2026-01-30
 
 ### Amazon.Lambda.TestTool.BlazorTester (0.17.0)
diff --git a/LambdaRuntimeDockerfiles/Images/net10/amd64/Dockerfile b/LambdaRuntimeDockerfiles/Images/net10/amd64/Dockerfile
index c78cffb88..1c8d48185 100644
--- a/LambdaRuntimeDockerfiles/Images/net10/amd64/Dockerfile
+++ b/LambdaRuntimeDockerfiles/Images/net10/amd64/Dockerfile
@@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023
 
 FROM $AMAZON_LINUX AS base
 
-RUN dnf install libicu-67.1-7.amzn2023.0.3.x86_64 --assumeyes
+RUN dnf install libicu-67.1-7.amzn2023.0.4.x86_64 --assumeyes
 
 FROM base AS builder-net10
 ARG ASPNET_VERSION
diff --git a/LambdaRuntimeDockerfiles/Images/net10/arm64/Dockerfile b/LambdaRuntimeDockerfiles/Images/net10/arm64/Dockerfile
index 615c29222..ebfa9f219 100644
--- a/LambdaRuntimeDockerfiles/Images/net10/arm64/Dockerfile
+++ b/LambdaRuntimeDockerfiles/Images/net10/arm64/Dockerfile
@@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023
 
 FROM $AMAZON_LINUX AS base
 
-RUN dnf install libicu-67.1-7.amzn2023.0.3.aarch64 --assumeyes
+RUN dnf install libicu-67.1-7.amzn2023.0.4.aarch64 --assumeyes
 
 FROM base AS builder-net10
 ARG ASPNET_VERSION
diff --git a/LambdaRuntimeDockerfiles/Images/net8/amd64/Dockerfile b/LambdaRuntimeDockerfiles/Images/net8/amd64/Dockerfile
index 359a42d03..d77988622 100644
--- a/LambdaRuntimeDockerfiles/Images/net8/amd64/Dockerfile
+++ b/LambdaRuntimeDockerfiles/Images/net8/amd64/Dockerfile
@@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023
 
 FROM $AMAZON_LINUX AS base
 
-RUN dnf install libicu-67.1-7.amzn2023.0.3.x86_64 --assumeyes
+RUN dnf install libicu-67.1-7.amzn2023.0.4.x86_64 --assumeyes
 
 FROM base AS builder-net8
 ARG ASPNET_VERSION
diff --git a/LambdaRuntimeDockerfiles/Images/net8/arm64/Dockerfile b/LambdaRuntimeDockerfiles/Images/net8/arm64/Dockerfile
index ea2cdbe45..ae1a5bcd9 100644
--- a/LambdaRuntimeDockerfiles/Images/net8/arm64/Dockerfile
+++ b/LambdaRuntimeDockerfiles/Images/net8/arm64/Dockerfile
@@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023
 
 FROM $AMAZON_LINUX AS base
 
-RUN dnf install libicu-67.1-7.amzn2023.0.3.aarch64 --assumeyes
+RUN dnf install libicu-67.1-7.amzn2023.0.4.aarch64 --assumeyes
 
 FROM base AS builder-net8
 ARG ASPNET_VERSION
diff --git a/LambdaRuntimeDockerfiles/Images/net9/amd64/Dockerfile b/LambdaRuntimeDockerfiles/Images/net9/amd64/Dockerfile
index a23676dfd..b100be748 100644
--- a/LambdaRuntimeDockerfiles/Images/net9/amd64/Dockerfile
+++ b/LambdaRuntimeDockerfiles/Images/net9/amd64/Dockerfile
@@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023
 
 FROM $AMAZON_LINUX AS base
 
-RUN dnf install libicu-67.1-7.amzn2023.0.3.x86_64 --assumeyes
+RUN dnf install libicu-67.1-7.amzn2023.0.4.x86_64 --assumeyes
 
 FROM base AS builder-net9
 ARG ASPNET_VERSION
diff --git a/LambdaRuntimeDockerfiles/Images/net9/arm64/Dockerfile b/LambdaRuntimeDockerfiles/Images/net9/arm64/Dockerfile
index 4e64e2080..ca665d114 100644
--- a/LambdaRuntimeDockerfiles/Images/net9/arm64/Dockerfile
+++ b/LambdaRuntimeDockerfiles/Images/net9/arm64/Dockerfile
@@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023
 
 FROM $AMAZON_LINUX AS base
 
-RUN dnf install libicu-67.1-7.amzn2023.0.3.aarch64 --assumeyes
+RUN dnf install libicu-67.1-7.amzn2023.0.4.aarch64 --assumeyes
 
 FROM base AS builder-net9
 ARG ASPNET_VERSION
diff --git a/Libraries/src/Amazon.Lambda.Core/Amazon.Lambda.Core.csproj b/Libraries/src/Amazon.Lambda.Core/Amazon.Lambda.Core.csproj
index 7627b7992..580096c1f 100644
--- a/Libraries/src/Amazon.Lambda.Core/Amazon.Lambda.Core.csproj
+++ b/Libraries/src/Amazon.Lambda.Core/Amazon.Lambda.Core.csproj
@@ -6,7 +6,7 @@
     <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
     <Description>Amazon Lambda .NET Core support - Core package.</Description>
     <AssemblyTitle>Amazon.Lambda.Core</AssemblyTitle>
-    <Version>2.8.0</Version>
+    <Version>2.8.1</Version>
     <AssemblyName>Amazon.Lambda.Core</AssemblyName>
     <PackageId>Amazon.Lambda.Core</PackageId>
     <PackageTags>AWS;Amazon;Lambda</PackageTags>
@@ -18,6 +18,9 @@
     <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
       <_Parameter1>Amazon.Lambda.RuntimeSupport, PublicKey="0024000004800000940000000602000000240000525341310004000001000100db5f59f098d27276c7833875a6263a3cc74ab17ba9a9df0b52aedbe7252745db7274d5271fd79c1f08f668ecfa8eaab5626fa76adc811d3c8fc55859b0d09d3bc0a84eecd0ba891f2b8a2fc55141cdcc37c2053d53491e650a479967c3622762977900eddbf1252ed08a2413f00a28f3a0752a81203f03ccb7f684db373518b4"</_Parameter1>
     </AssemblyAttribute>
+    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
+      <_Parameter1>Amazon.Lambda.RuntimeSupport.TestTool, PublicKey="0024000004800000940000000602000000240000525341310004000001000100db5f59f098d27276c7833875a6263a3cc74ab17ba9a9df0b52aedbe7252745db7274d5271fd79c1f08f668ecfa8eaab5626fa76adc811d3c8fc55859b0d09d3bc0a84eecd0ba891f2b8a2fc55141cdcc37c2053d53491e650a479967c3622762977900eddbf1252ed08a2413f00a28f3a0752a81203f03ccb7f684db373518b4"</_Parameter1>
+    </AssemblyAttribute>
     <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
       <_Parameter1>Amazon.Lambda.RuntimeSupport.UnitTests, PublicKey="0024000004800000940000000602000000240000525341310004000001000100db5f59f098d27276c7833875a6263a3cc74ab17ba9a9df0b52aedbe7252745db7274d5271fd79c1f08f668ecfa8eaab5626fa76adc811d3c8fc55859b0d09d3bc0a84eecd0ba891f2b8a2fc55141cdcc37c2053d53491e650a479967c3622762977900eddbf1252ed08a2413f00a28f3a0752a81203f03ccb7f684db373518b4"</_Parameter1>
     </AssemblyAttribute>
diff --git a/Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj b/Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj
index b921afb9b..77b2a0057 100644
--- a/Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj
+++ b/Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj
@@ -4,10 +4,9 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net6.0;net8.0;net9.0;net10.0</TargetFrameworks>
-    <Version>1.14.1</Version>
+    <Version>1.14.2</Version>
     <Description>Provides a bootstrap and Lambda Runtime API Client to help you to develop custom .NET Core Lambda Runtimes.</Description>
     <AssemblyTitle>Amazon.Lambda.RuntimeSupport</AssemblyTitle>
-    <AssemblyName>Amazon.Lambda.RuntimeSupport</AssemblyName>
     <PackageId>Amazon.Lambda.RuntimeSupport</PackageId>
     <PackageTags>AWS;Amazon;Lambda</PackageTags>
     <PackageReadmeFile>README.md</PackageReadmeFile>
@@ -24,6 +23,13 @@
     <CheckEolTargetFramework>false</CheckEolTargetFramework>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(AlternateAssemblyName)'!='' ">
+    <AssemblyName>$(AlternateAssemblyName)</AssemblyName>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(AlternateAssemblyName)'=='' ">
+    <AssemblyName>Amazon.Lambda.RuntimeSupport</AssemblyName>
+  </PropertyGroup>
+
   <PropertyGroup Condition=" '$(ExecutableOutputType)'=='true' ">
     <OutputType>Exe</OutputType>
     <DefineConstants>$(DefineConstants);ExecutableOutputType</DefineConstants>
diff --git a/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/LambdaBootstrap.cs b/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/LambdaBootstrap.cs
index 68247f7a8..0e00f3e7f 100644
--- a/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/LambdaBootstrap.cs
+++ b/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/LambdaBootstrap.cs
@@ -235,6 +235,18 @@ internal LambdaBootstrap(HttpClient httpClient, LambdaBootstrapHandler handler,
                 {
                     registry = SnapstartHelperCopySnapshotCallbacksIsolated.CopySnapshotCallbacks();
                 }
+                catch (MethodAccessException ex)
+                {
+                    // This would happen with the Lambda test tool when the Amazon.Lambda.RuntimeSupport assembly
+                    // was renamed when embedded into the test tool. The renamed assembly would cause this error
+                    // since older versions Amazon.Lambda.Core used in the customer's function would not have provided
+                    // access to the internals for the renamed assembly version.
+                    Client.ConsoleLogger.FormattedWriteLine(
+                        Amazon.Lambda.RuntimeSupport.Helpers.LogLevelLoggerWriter.LogLevel.Error.ToString(),
+                        "Failed to retrieve snapshot hooks from Amazon.Lambda.Core.SnapshotRestore, " +
+                        $"this can be fixed by updating the version of Amazon.Lambda.Core: {ex}",
+                        null);
+                }
                 catch (TypeLoadException ex)
                 {
                     Client.ConsoleLogger.FormattedWriteLine(
@@ -441,6 +453,16 @@ private void SetInvocationTraceId(string traceId)
                 {
                     TraceProviderIsolated.SetCurrentTraceId(traceId);
                 }
+                catch (MethodAccessException)
+                {
+                    // This would happen with the Lambda test tool when the Amazon.Lambda.RuntimeSupport assembly
+                    // was renamed when embedded into the test tool. The renamed assembly would cause this error
+                    // since older versions Amazon.Lambda.Core used in the customer's function would not have provided
+                    // access to the internals for the renamed assembly version.
+                    _disableTraceProvider = true;
+                    _logger.LogInformation("Failed to set the trace id on Amazon.Lambda.Core.LambdaTraceProvider due to the version of " +
+                                           "Amazon.Lambda.Core being provided by Lambda Function being out of date.");
+                }
                 catch (TypeLoadException)
                 {
                     // Disable attempting to set trace id in the future. If we got a TypeLoadException then setting the
@@ -448,7 +470,7 @@ private void SetInvocationTraceId(string traceId)
                     _disableTraceProvider = true;
                     _logger.LogInformation("Failed to set the trace id on Amazon.Lambda.Core.LambdaTraceProvider due to the version of " +
                                            "Amazon.Lambda.Core being provided by Lambda Function being out of date.");
-                }
+                }                
             }
         }
 
diff --git a/Tools/LambdaTestTool-v2/README.md b/Tools/LambdaTestTool-v2/README.md
index 567bcd441..ba025aefa 100644
--- a/Tools/LambdaTestTool-v2/README.md
+++ b/Tools/LambdaTestTool-v2/README.md
@@ -268,7 +268,7 @@ Configure the Lambda function to use the test tool:
     "LambdaRuntimeClient_FunctionHandler": {
       "workingDirectory": ".\\bin\\$(Configuration)\\net8.0",
       "commandName": "Executable",
-      "commandLineArgs": "exec --depsfile ./MyLambdaFunction.deps.json  --runtimeconfig ./MyLambdaFunction.runtimeconfig.json %USERPROFILE%/.dotnet/tools/.store/amazon.lambda.testtool/{TEST_TOOL_VERSION}/amazon.lambda.testtool/{TEST_TOOL_VERSION}/content/Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.dll MyLambdaFunction::MyLambdaFunction.Function::Add",
+      "commandLineArgs": "exec --depsfile ./MyLambdaFunction.deps.json  --runtimeconfig ./MyLambdaFunction.runtimeconfig.json %USERPROFILE%/.dotnet/tools/.store/amazon.lambda.testtool/{TEST_TOOL_VERSION}/amazon.lambda.testtool/{TEST_TOOL_VERSION}/content/Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.TestTool.dll MyLambdaFunction::MyLambdaFunction.Function::Add",
       "executablePath": "dotnet",
       "environmentVariables": {
         "AWS_LAMBDA_RUNTIME_API": "localhost:5050/AddLambdaFunction"
@@ -288,7 +288,8 @@ There are three variables you need to update in the launch settings:
 2. `{TARGET_FRAMEWORK}` - Replace with your Lambda project's target framework version (e.g., `net8.0` in the example above)
    - This appears in two places:
      - The working directory: `.\\bin\\$(Configuration)\\{TARGET_FRAMEWORK}`
-     - The runtime support DLL path: `Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.dll`
+     - The runtime support DLL path: `Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.TestTool.dll`
+     - **Note: For the test tool the Amazon.Lambda.RuntimeSupport.dll assembly was renamed to Amazon.Lambda.RuntimeSupport.TestTool.dll to avoid conflicts with versions of Amazon.Lambda.RuntimeSupport used by the Lambda function itself.**
 
 3. `{FUNCTION_HANDLER}` - Replace with your function's handler using the format: `<project_name>::<namespace>.<class>::<method_name>`
    - Example: `MyLambdaFunction::MyLambdaFunction.Function::Add`
@@ -341,4 +342,4 @@ The Test Tool provides users with the ability to save Lambda requests for quick
 
 In order to enable saving requests, you will need to provide a storage path during the test tool startup. 
 
-You can use the command line argument `--config-storage-path <absolute-path>` to specify the storage path.
\ No newline at end of file
+You can use the command line argument `--config-storage-path <absolute-path>` to specify the storage path.
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 d8e87b598..571e346c2 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
@@ -15,7 +15,7 @@
     <PackAsTool>true</PackAsTool>
     <PackageId>Amazon.Lambda.TestTool</PackageId>
     <ToolCommandName>dotnet-lambda-test-tool</ToolCommandName>
-    <Version>0.11.1</Version>
+    <Version>0.12.0</Version>
     <NoWarn>NU5100</NoWarn>
     <RollForward>Major</RollForward>
     <PackageReadmeFile>README.md</PackageReadmeFile>
@@ -47,7 +47,7 @@
   </Target>
 
   <Target Name="PublishRuntimeSupportFiles" DependsOnTargets="GetRuntimeSupportTargetFrameworks" BeforeTargets="Build">
-    <Exec Command="dotnet publish &quot;$(MSBuildThisFileDirectory)../../../../Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj&quot; -c $(Configuration) -f %(TargetFrameworks.Identity) /p:ExecutableOutputType=true" />
+    <Exec Command="dotnet publish &quot;$(MSBuildThisFileDirectory)../../../../Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj&quot; -c $(Configuration) -f %(TargetFrameworks.Identity) /p:ExecutableOutputType=true /p:AlternateAssemblyName=Amazon.Lambda.RuntimeSupport.TestTool" />
   </Target>
 
   <Target Name="CopyRuntimeSupportFiles" DependsOnTargets="GetRuntimeSupportTargetFrameworks" BeforeTargets="_GetPackageFiles">
diff --git a/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/PackagingTests.cs b/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/PackagingTests.cs
index 0402506fa..d2051615e 100644
--- a/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/PackagingTests.cs
+++ b/Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/PackagingTests.cs
@@ -144,9 +144,9 @@ public void VerifyPackageContentsHasRuntimeSupport()
             var essentialFiles = new[]
             {
                 $"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.Core.dll",
-                $"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.dll",
-                $"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.deps.json",
-                $"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.runtimeconfig.json"
+                $"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.TestTool.dll",
+                $"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.TestTool.deps.json",
+                $"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.TestTool.runtimeconfig.json"
             };
 
             var missingFiles = essentialFiles.Where(f => !frameworkFiles.Contains(f)).ToList();