diff --git a/InvoiceReminder.API.UnitTests/InvoiceReminder.API.UnitTests.csproj b/InvoiceReminder.API.UnitTests/InvoiceReminder.API.UnitTests.csproj
index 04cf0e6..3056602 100644
--- a/InvoiceReminder.API.UnitTests/InvoiceReminder.API.UnitTests.csproj
+++ b/InvoiceReminder.API.UnitTests/InvoiceReminder.API.UnitTests.csproj
@@ -12,6 +12,11 @@
       -->
     <TestingPlatformShowTestsFailure>true</TestingPlatformShowTestsFailure>
   </PropertyGroup>
+    
+  <ItemGroup>
+    <ProjectReference Include="..\InvoiceReminder.API\InvoiceReminder.API.csproj" />
+    <ProjectReference Include="..\InvoiceReminder.UnitTests.Assets\InvoiceReminder.UnitTests.Assets.csproj" />
+  </ItemGroup>  
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Authentication.Abstractions" Version="2.3.0" />
@@ -24,35 +29,15 @@
     <PackageReference Include="Shouldly" Version="4.3.0" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\InvoiceReminder.API\InvoiceReminder.API.csproj" />
-    <ProjectReference Include="..\InvoiceReminder.UnitTests.Assets\InvoiceReminder.UnitTests.Assets.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.Analyzers" Version="3.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestAdapter" Version="3.9.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
diff --git a/InvoiceReminder.API/InvoiceReminder.API.csproj b/InvoiceReminder.API/InvoiceReminder.API.csproj
index 7fcaec9..9bea650 100644
--- a/InvoiceReminder.API/InvoiceReminder.API.csproj
+++ b/InvoiceReminder.API/InvoiceReminder.API.csproj
@@ -2,8 +2,8 @@
 
   <PropertyGroup>
     <TargetFramework>net9.0</TargetFramework>
-    <Nullable>disable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>disable</Nullable>
     <UserSecretsId>cb5b3f1e-1e38-47a5-bcd4-457b0c7f1d0a</UserSecretsId>
   </PropertyGroup>
 
@@ -18,7 +18,7 @@
     </PackageReference>
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="9.0.7" />
     <PackageReference Include="Scalar.AspNetCore" Version="2.6.4" />
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.14.0.120626">
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="10.15.0.120848">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/InvoiceReminder.Application.UnitTests/InvoiceReminder.Application.UnitTests.csproj b/InvoiceReminder.Application.UnitTests/InvoiceReminder.Application.UnitTests.csproj
index 3b7386e..6b05556 100644
--- a/InvoiceReminder.Application.UnitTests/InvoiceReminder.Application.UnitTests.csproj
+++ b/InvoiceReminder.Application.UnitTests/InvoiceReminder.Application.UnitTests.csproj
@@ -11,7 +11,12 @@
       -->
     <TestingPlatformShowTestsFailure>true</TestingPlatformShowTestsFailure>
   </PropertyGroup>
-
+    
+  <ItemGroup>
+    <ProjectReference Include="..\InvoiceReminder.Application\InvoiceReminder.Application.csproj" />
+    <ProjectReference Include="..\InvoiceReminder.UnitTests.Assets\InvoiceReminder.UnitTests.Assets.csproj" />
+  </ItemGroup>
+    
   <ItemGroup>
     <PackageReference Include="NSubstitute" Version="5.3.0" />
     <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.17">
@@ -21,35 +26,15 @@
     <PackageReference Include="Shouldly" Version="4.3.0" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\InvoiceReminder.Application\InvoiceReminder.Application.csproj" />
-    <ProjectReference Include="..\InvoiceReminder.UnitTests.Assets\InvoiceReminder.UnitTests.Assets.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.Analyzers" Version="3.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestAdapter" Version="3.9.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
diff --git a/InvoiceReminder.ArchitectureTests/InvoiceReminder.ArchitectureTests.csproj b/InvoiceReminder.ArchitectureTests/InvoiceReminder.ArchitectureTests.csproj
index d3a4e1c..93d686e 100644
--- a/InvoiceReminder.ArchitectureTests/InvoiceReminder.ArchitectureTests.csproj
+++ b/InvoiceReminder.ArchitectureTests/InvoiceReminder.ArchitectureTests.csproj
@@ -4,7 +4,7 @@
     <TargetFramework>net9.0</TargetFramework>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
+    <Nullable>disable</Nullable>
     <!--
       Displays error on console in addition to the log file. Note that this feature comes with a performance impact.
       For more information, visit https://learn.microsoft.com/dotnet/core/testing/unit-testing-platform-integration-dotnet-test#show-failure-per-test
@@ -12,11 +12,6 @@
     <TestingPlatformShowTestsFailure>true</TestingPlatformShowTestsFailure>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="NetArchTest.Rules" Version="1.3.2" />
-    <PackageReference Include="Shouldly" Version="4.3.0" />
-  </ItemGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\InvoiceReminder.API\InvoiceReminder.API.csproj" />
     <ProjectReference Include="..\InvoiceReminder.Application\InvoiceReminder.Application.csproj" />
@@ -25,29 +20,19 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="NetArchTest.Rules" Version="1.3.2" />
+    <PackageReference Include="Shouldly" Version="4.3.0" />
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.Analyzers" Version="3.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestAdapter" Version="3.9.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
diff --git a/InvoiceReminder.DomainEntities.UnitTests/InvoiceReminder.DomainEntities.UnitTests.csproj b/InvoiceReminder.DomainEntities.UnitTests/InvoiceReminder.DomainEntities.UnitTests.csproj
index 62c0e5f..1ea5abe 100644
--- a/InvoiceReminder.DomainEntities.UnitTests/InvoiceReminder.DomainEntities.UnitTests.csproj
+++ b/InvoiceReminder.DomainEntities.UnitTests/InvoiceReminder.DomainEntities.UnitTests.csproj
@@ -13,41 +13,26 @@
     <TestingPlatformShowTestsFailure>true</TestingPlatformShowTestsFailure>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="9.0.7" />
-    <PackageReference Include="NSubstitute" Version="5.3.0" />
-    <PackageReference Include="Shouldly" Version="4.3.0" />
-  </ItemGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\InvoiceReminder.Domain\InvoiceReminder.Domain.csproj" />
     <ProjectReference Include="..\InvoiceReminder.UnitTests.Assets\InvoiceReminder.UnitTests.Assets.csproj" />
   </ItemGroup>
-
+    
   <ItemGroup>
-    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="9.0.7" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="Shouldly" Version="4.3.0" />
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.Analyzers" Version="3.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestAdapter" Version="3.9.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
diff --git a/InvoiceReminder.ExternalServices.UnitTests/InvoiceReminder.ExternalServices.UnitTests.csproj b/InvoiceReminder.ExternalServices.UnitTests/InvoiceReminder.ExternalServices.UnitTests.csproj
index 89b1ac0..45705ef 100644
--- a/InvoiceReminder.ExternalServices.UnitTests/InvoiceReminder.ExternalServices.UnitTests.csproj
+++ b/InvoiceReminder.ExternalServices.UnitTests/InvoiceReminder.ExternalServices.UnitTests.csproj
@@ -13,6 +13,10 @@
     <TestingPlatformShowTestsFailure>true</TestingPlatformShowTestsFailure>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\InvoiceReminder.Services\InvoiceReminder.ExternalServices.csproj" />
+  </ItemGroup>
+    
   <ItemGroup>
     <PackageReference Include="itext.bouncy-castle-adapter" Version="9.2.0" />
     <PackageReference Include="itext.bouncy-castle-fips-adapter" Version="9.2.0" />
@@ -24,34 +28,15 @@
     <PackageReference Include="Shouldly" Version="4.3.0" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\InvoiceReminder.Services\InvoiceReminder.ExternalServices.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.Analyzers" Version="3.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestAdapter" Version="3.9.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
diff --git a/InvoiceReminder.Infrastructure.UnitTests/InvoiceReminder.Infrastructure.UnitTests.csproj b/InvoiceReminder.Infrastructure.UnitTests/InvoiceReminder.Infrastructure.UnitTests.csproj
index 879c1e4..22a36ad 100644
--- a/InvoiceReminder.Infrastructure.UnitTests/InvoiceReminder.Infrastructure.UnitTests.csproj
+++ b/InvoiceReminder.Infrastructure.UnitTests/InvoiceReminder.Infrastructure.UnitTests.csproj
@@ -12,6 +12,12 @@
     <TestingPlatformShowTestsFailure>true</TestingPlatformShowTestsFailure>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\InvoiceReminder.Authentication\InvoiceReminder.Authentication.csproj" />
+    <ProjectReference Include="..\InvoiceReminder.Data\InvoiceReminder.Data.csproj" />
+    <ProjectReference Include="..\InvoiceReminder.UnitTests.Assets\InvoiceReminder.UnitTests.Assets.csproj" />
+  </ItemGroup>
+    
   <ItemGroup>
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.7" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="9.0.7" />
@@ -24,36 +30,15 @@
     <PackageReference Include="Shouldly" Version="4.3.0" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\InvoiceReminder.Authentication\InvoiceReminder.Authentication.csproj" />
-    <ProjectReference Include="..\InvoiceReminder.Data\InvoiceReminder.Data.csproj" />
-    <ProjectReference Include="..\InvoiceReminder.UnitTests.Assets\InvoiceReminder.UnitTests.Assets.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.Analyzers" Version="3.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestAdapter" Version="3.9.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
diff --git a/InvoiceReminder.JobScheduler.UnitTests/InvoiceReminder.JobScheduler.UnitTests.csproj b/InvoiceReminder.JobScheduler.UnitTests/InvoiceReminder.JobScheduler.UnitTests.csproj
index 4f802c4..e92cc4b 100644
--- a/InvoiceReminder.JobScheduler.UnitTests/InvoiceReminder.JobScheduler.UnitTests.csproj
+++ b/InvoiceReminder.JobScheduler.UnitTests/InvoiceReminder.JobScheduler.UnitTests.csproj
@@ -13,43 +13,28 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <ProjectReference Include="..\InvoiceReminder.JobScheduler\InvoiceReminder.JobScheduler.csproj" />
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
+    <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.17">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Shouldly" Version="4.3.0" />
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
     <PackageReference Update="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.Analyzers" Version="3.9.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestAdapter" Version="3.9.3" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Update="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
-  <ItemGroup>
-    <PackageReference Include="NSubstitute" Version="5.3.0" />
-    <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.17">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
-    <PackageReference Include="Shouldly" Version="4.3.0" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\InvoiceReminder.JobScheduler\InvoiceReminder.JobScheduler.csproj" />
-  </ItemGroup>
-
 </Project>