diff --git a/README.md b/README.md
index f5ad9bc..426f0ce 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ An example of payload passed into the Azure service bus can be seen below.
 ### Prerequisites
 In order to run the service you will need the following dependencies:
 
-- .NET 6
+- .NET 8
 - Redis
 - Azure CLI
 
diff --git a/pipelines/ci_pipeline.yaml b/pipelines/ci_pipeline.yaml
index 6757443..a7218c1 100644
--- a/pipelines/ci_pipeline.yaml
+++ b/pipelines/ci_pipeline.yaml
@@ -42,7 +42,7 @@ resources:
       name: defra/epr-webapps-code-deploy-templates
       type: github
       endpoint: defra
-      ref: main
+      ref: upgrade-net-8
 
 extends:
   template: epr-build-pipeline.yaml@CommonTemplates
diff --git a/pipelines/deployment-pipeline.yaml b/pipelines/deployment-pipeline.yaml
index c3d91db..9733584 100644
--- a/pipelines/deployment-pipeline.yaml
+++ b/pipelines/deployment-pipeline.yaml
@@ -62,7 +62,7 @@ resources:
       name: defra/epr-webapps-code-deploy-templates
       type: github
       endpoint: defra
-      ref: main
+      ref: upgrade-net-8
 
     # The repo will be reference the repo by a release tag (if the imageTag parameter contains 'release') otherwise it will pull down the main branch.
     - repository: ReleaseTags
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 30687be..f8e9e8b 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>
     
     <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
diff --git a/src/EPR.ProducerContentValidation.Application.UnitTests/EPR.ProducerContentValidation.Application.UnitTests.csproj b/src/EPR.ProducerContentValidation.Application.UnitTests/EPR.ProducerContentValidation.Application.UnitTests.csproj
index c15d984..9a53f22 100644
--- a/src/EPR.ProducerContentValidation.Application.UnitTests/EPR.ProducerContentValidation.Application.UnitTests.csproj
+++ b/src/EPR.ProducerContentValidation.Application.UnitTests/EPR.ProducerContentValidation.Application.UnitTests.csproj
@@ -1,23 +1,29 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
         <IsPackable>false</IsPackable>
         <SonarQubeTestProject>true</SonarQubeTestProject>
+        <TargetFramework>net8.0</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
         <PackageReference Include="AutoFixture" Version="4.18.1" />
-        <PackageReference Include="Bogus" Version="35.4.0" />
-        <PackageReference Include="coverlet.collector" Version="3.2.0" />
-        <PackageReference Include="coverlet.msbuild" Version="3.2.0">
+        <PackageReference Include="Bogus" Version="35.5.1" />
+        <PackageReference Include="coverlet.collector" Version="6.0.2">
+          <PrivateAssets>all</PrivateAssets>
+          <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
+        <PackageReference Include="coverlet.msbuild" Version="6.0.2">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
-        <PackageReference Include="FluentAssertions" Version="6.8.0" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
-        <PackageReference Include="Moq" Version="4.18.2" />
-        <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
-        <PackageReference Include="MSTest.TestFramework" Version="2.2.8" />
+        <PackageReference Include="FluentAssertions" Version="6.12.0" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+        <PackageReference Include="Moq" Version="4.20.70" />
+        <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
+        <PackageReference Include="MSTest.TestFramework" Version="3.4.3" />
+        <PackageReference Include="System.Net.Http" Version="4.3.4" />
+        <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/src/EPR.ProducerContentValidation.Application/EPR.ProducerContentValidation.Application.csproj b/src/EPR.ProducerContentValidation.Application/EPR.ProducerContentValidation.Application.csproj
index 33bb6da..7e2686e 100644
--- a/src/EPR.ProducerContentValidation.Application/EPR.ProducerContentValidation.Application.csproj
+++ b/src/EPR.ProducerContentValidation.Application/EPR.ProducerContentValidation.Application.csproj
@@ -1,23 +1,24 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
         <SonarQubeTestProject>false</SonarQubeTestProject>
+        <TargetFramework>net8.0</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="AutoMapper.Extensions.Microsoft.DependencyInjection" Version="12.0.0" />
-        <PackageReference Include="FluentValidation" Version="11.8.1" />
-        <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.4.0" />
-        <PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.Http" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.Options" Version="6.0.0" />
-        <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
-        <PackageReference Include="StackExchange.Redis" Version="2.6.122" />
+        <PackageReference Include="AutoMapper" Version="13.0.1" />
+        <PackageReference Include="FluentValidation" Version="11.9.2" />
+        <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.9.2" />
+        <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
+        <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="8.0.0" />
+        <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="8.0.1" />
+        <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+        <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.1" />
+        <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
+        <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.1" />
+        <PackageReference Include="Microsoft.Extensions.Options" Version="8.0.2" />
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+        <PackageReference Include="StackExchange.Redis" Version="2.8.0" />
     </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/src/EPR.ProducerContentValidation.Application/Exceptions/MissingSubmissionConfidurationException.cs b/src/EPR.ProducerContentValidation.Application/Exceptions/MissingSubmissionConfidurationException.cs
index 321ca98..f861072 100644
--- a/src/EPR.ProducerContentValidation.Application/Exceptions/MissingSubmissionConfidurationException.cs
+++ b/src/EPR.ProducerContentValidation.Application/Exceptions/MissingSubmissionConfidurationException.cs
@@ -1,5 +1,4 @@
 using System.Diagnostics.CodeAnalysis;
-using System.Runtime.Serialization;
 
 namespace EPR.ProducerContentValidation.Application.Exceptions;
 
@@ -11,9 +10,4 @@ public MissingSubmissionConfidurationException(string message)
     : base(message)
     {
     }
-
-    protected MissingSubmissionConfidurationException(SerializationInfo info, StreamingContext context)
-    : base(info, context)
-    {
-    }
 }
diff --git a/src/EPR.ProducerContentValidation.Application/Exceptions/SubmissionApiClientException.cs b/src/EPR.ProducerContentValidation.Application/Exceptions/SubmissionApiClientException.cs
index 1820183..2133f29 100644
--- a/src/EPR.ProducerContentValidation.Application/Exceptions/SubmissionApiClientException.cs
+++ b/src/EPR.ProducerContentValidation.Application/Exceptions/SubmissionApiClientException.cs
@@ -1,7 +1,6 @@
 namespace EPR.ProducerContentValidation.Application.Exceptions;
 
 using System.Diagnostics.CodeAnalysis;
-using System.Runtime.Serialization;
 
 [ExcludeFromCodeCoverage]
 [Serializable]
@@ -11,9 +10,4 @@ public SubmissionApiClientException(string message, Exception cause)
         : base(message, cause)
     {
     }
-
-    protected SubmissionApiClientException(SerializationInfo info, StreamingContext context)
-        : base(info, context)
-    {
-    }
 }
\ No newline at end of file
diff --git a/src/EPR.ProducerContentValidation.FunctionApp.UnitTests/EPR.ProducerContentValidation.FunctionApp.UnitTests.csproj b/src/EPR.ProducerContentValidation.FunctionApp.UnitTests/EPR.ProducerContentValidation.FunctionApp.UnitTests.csproj
index 22ca936..1a04807 100644
--- a/src/EPR.ProducerContentValidation.FunctionApp.UnitTests/EPR.ProducerContentValidation.FunctionApp.UnitTests.csproj
+++ b/src/EPR.ProducerContentValidation.FunctionApp.UnitTests/EPR.ProducerContentValidation.FunctionApp.UnitTests.csproj
@@ -1,22 +1,26 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <IsPackable>false</IsPackable>
         <SonarQubeTestProject>true</SonarQubeTestProject>
+        <TargetFramework>net8.0</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="coverlet.collector" Version="3.2.0" />
-        <PackageReference Include="coverlet.msbuild" Version="3.2.0">
+        <PackageReference Include="coverlet.collector" Version="6.0.2">
+          <PrivateAssets>all</PrivateAssets>
+          <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
+        <PackageReference Include="coverlet.msbuild" Version="6.0.2">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
-        <PackageReference Include="FluentAssertions" Version="6.8.0" />
+        <PackageReference Include="FluentAssertions" Version="6.12.0" />
         <PackageReference Include="ILogger.Moq" Version="1.1.10" />
-        <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
-        <PackageReference Include="Moq" Version="4.18.2" />
-        <PackageReference Include="MSTest.TestAdapter" Version="2.2.7" />
-        <PackageReference Include="MSTest.TestFramework" Version="2.2.7" />
+        <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.1" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+        <PackageReference Include="Moq" Version="4.20.70" />
+        <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
+        <PackageReference Include="MSTest.TestFramework" Version="3.4.3" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/src/EPR.ProducerContentValidation.FunctionApp/Dockerfile b/src/EPR.ProducerContentValidation.FunctionApp/Dockerfile
index 3bdf958..75d2dc2 100644
--- a/src/EPR.ProducerContentValidation.FunctionApp/Dockerfile
+++ b/src/EPR.ProducerContentValidation.FunctionApp/Dockerfile
@@ -1,7 +1,7 @@
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS installer-env
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS installer-env
 
 # Build requires 3.1 SDK
-COPY --from=mcr.microsoft.com/dotnet/core/sdk:3.1 /usr/share/dotnet /usr/share/dotnet
+#COPY --from=mcr.microsoft.com/dotnet/core/sdk:3.1 /usr/share/dotnet /usr/share/dotnet
 
 # Copy everything
 COPY stylecop.ruleset ./
@@ -13,7 +13,7 @@ RUN dotnet publish EPR.ProducerContentValidation.FunctionApp/*.csproj --output /
 
 # To enable ssh & remote debugging on app service change the base image to the one below
 # FROM mcr.microsoft.com/azure-functions/dotnet:4-appservice
-FROM mcr.microsoft.com/azure-functions/dotnet:4
+FROM mcr.microsoft.com/azure-functions/dotnet:4-dotnet8
 
 # Create a non-root user and set permissions
 RUN groupadd -r dotnet && \
diff --git a/src/EPR.ProducerContentValidation.FunctionApp/EPR.ProducerContentValidation.FunctionApp.csproj b/src/EPR.ProducerContentValidation.FunctionApp/EPR.ProducerContentValidation.FunctionApp.csproj
index a5a9277..09cae52 100644
--- a/src/EPR.ProducerContentValidation.FunctionApp/EPR.ProducerContentValidation.FunctionApp.csproj
+++ b/src/EPR.ProducerContentValidation.FunctionApp/EPR.ProducerContentValidation.FunctionApp.csproj
@@ -1,19 +1,22 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <AzureFunctionsVersion>V4</AzureFunctionsVersion>
         <SonarQubeTestProject>false</SonarQubeTestProject>
         <!-- SonarCloud does not recognise file-scoped namespaces in current version. -->
         <NoWarn>S3903</NoWarn>
+        <TargetFramework>net8.0</TargetFramework>
     </PropertyGroup>
     <ItemGroup>
+        <PackageReference Include="Azure.Identity" Version="1.12.0" />
         <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
-        <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.ServiceBus" Version="5.2.0" />
-        <PackageReference Include="Microsoft.Azure.WebJobs.Logging.ApplicationInsights" Version="3.0.34" />
-        <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.Http" Version="6.0.0" />
-        <PackageReference Include="Microsoft.Extensions.Options" Version="6.0.0" />
-        <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.1.1" />
+        <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.ServiceBus" Version="5.16.1" />
+        <PackageReference Include="Microsoft.Azure.WebJobs.Logging.ApplicationInsights" Version="3.0.35" />
+        <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+        <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.1" />
+        <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
+        <PackageReference Include="Microsoft.Extensions.Options" Version="8.0.2" />
+        <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.4.0" />
+        <PackageReference Include="System.Drawing.Common" Version="8.0.6" />
     </ItemGroup>
     <ItemGroup>
         <None Update="host.json">
diff --git a/src/EPR.ProducerContentValidation.TestSupport/EPR.ProducerContentValidation.TestSupport.csproj b/src/EPR.ProducerContentValidation.TestSupport/EPR.ProducerContentValidation.TestSupport.csproj
index 5929435..395f9e4 100644
--- a/src/EPR.ProducerContentValidation.TestSupport/EPR.ProducerContentValidation.TestSupport.csproj
+++ b/src/EPR.ProducerContentValidation.TestSupport/EPR.ProducerContentValidation.TestSupport.csproj
@@ -1,9 +1,10 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <ItemGroup>
-    <ProjectReference Include="..\EPR.ProducerContentValidation.Application\EPR.ProducerContentValidation.Application.csproj"/>
+    <ProjectReference Include="..\EPR.ProducerContentValidation.Application\EPR.ProducerContentValidation.Application.csproj" />
   </ItemGroup>
 
   <PropertyGroup>
     <SonarQubeExclude>true</SonarQubeExclude>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 </Project>