diff --git a/src/Umbraco.Configuration/Umbraco.Configuration.csproj b/src/Umbraco.Configuration/Umbraco.Configuration.csproj
index bc28a2c13a..57fca1dfd6 100644
--- a/src/Umbraco.Configuration/Umbraco.Configuration.csproj
+++ b/src/Umbraco.Configuration/Umbraco.Configuration.csproj
@@ -2,6 +2,7 @@
 
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
+        <LangVersion>8</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/src/Umbraco.Core/Umbraco.Core.csproj b/src/Umbraco.Core/Umbraco.Core.csproj
index 52322f979a..7a15e7fbed 100644
--- a/src/Umbraco.Core/Umbraco.Core.csproj
+++ b/src/Umbraco.Core/Umbraco.Core.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
-        <LangVersion>7.3</LangVersion>
+        <LangVersion>8</LangVersion>
         <RootNamespace>Umbraco.Core</RootNamespace>
         <AssemblyVersion>9.0.0</AssemblyVersion>
         <InformationalVersion>9.0.0</InformationalVersion>
diff --git a/src/Umbraco.Examine.Lucene/Umbraco.Examine.Lucene.csproj b/src/Umbraco.Examine.Lucene/Umbraco.Examine.Lucene.csproj
index 726cb4759e..932d6d318b 100644
--- a/src/Umbraco.Examine.Lucene/Umbraco.Examine.Lucene.csproj
+++ b/src/Umbraco.Examine.Lucene/Umbraco.Examine.Lucene.csproj
@@ -5,6 +5,7 @@
         <RootNamespace>Umbraco.Examine</RootNamespace>
         <Product>Umbraco CMS</Product>
         <Title>Umbraco.Examine.Lucene</Title>
+        <LangVersion>8</LangVersion>
     </PropertyGroup>
 
     <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
diff --git a/src/Umbraco.Infrastructure/Umbraco.Infrastructure.csproj b/src/Umbraco.Infrastructure/Umbraco.Infrastructure.csproj
index f73e5a548e..41fd2bfe75 100644
--- a/src/Umbraco.Infrastructure/Umbraco.Infrastructure.csproj
+++ b/src/Umbraco.Infrastructure/Umbraco.Infrastructure.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
-        <LangVersion>7.3</LangVersion>
+        <LangVersion>8</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/src/Umbraco.ModelsBuilder.Embedded/Umbraco.ModelsBuilder.Embedded.csproj b/src/Umbraco.ModelsBuilder.Embedded/Umbraco.ModelsBuilder.Embedded.csproj
index 71b3020c57..2637da8560 100644
--- a/src/Umbraco.ModelsBuilder.Embedded/Umbraco.ModelsBuilder.Embedded.csproj
+++ b/src/Umbraco.ModelsBuilder.Embedded/Umbraco.ModelsBuilder.Embedded.csproj
@@ -12,7 +12,7 @@
     <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
-    <LangVersion>7.3</LangVersion>
+    <LangVersion>8</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/src/Umbraco.Persistance.SqlCe/Umbraco.Persistance.SqlCe.csproj b/src/Umbraco.Persistance.SqlCe/Umbraco.Persistance.SqlCe.csproj
index ae40051129..3174d4a7e2 100644
--- a/src/Umbraco.Persistance.SqlCe/Umbraco.Persistance.SqlCe.csproj
+++ b/src/Umbraco.Persistance.SqlCe/Umbraco.Persistance.SqlCe.csproj
@@ -2,6 +2,7 @@
 
     <PropertyGroup>
         <TargetFramework>net472</TargetFramework>
+        <LangVersion>8</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/src/Umbraco.PublishedCache.NuCache/Umbraco.PublishedCache.NuCache.csproj b/src/Umbraco.PublishedCache.NuCache/Umbraco.PublishedCache.NuCache.csproj
index 50607130b4..75eeca268b 100644
--- a/src/Umbraco.PublishedCache.NuCache/Umbraco.PublishedCache.NuCache.csproj
+++ b/src/Umbraco.PublishedCache.NuCache/Umbraco.PublishedCache.NuCache.csproj
@@ -3,6 +3,7 @@
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
         <RootNamespace>Umbraco.Infrastructure.PublishedCache</RootNamespace>
+        <LangVersion>8</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/src/Umbraco.TestData/Umbraco.TestData.csproj b/src/Umbraco.TestData/Umbraco.TestData.csproj
index e79ecfd589..963b598f26 100644
--- a/src/Umbraco.TestData/Umbraco.TestData.csproj
+++ b/src/Umbraco.TestData/Umbraco.TestData.csproj
@@ -12,6 +12,7 @@
     <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
+    <LangVersion>8</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/src/Umbraco.Tests.Benchmarks/Umbraco.Tests.Benchmarks.csproj b/src/Umbraco.Tests.Benchmarks/Umbraco.Tests.Benchmarks.csproj
index c64c0e0da4..7566d8ab85 100644
--- a/src/Umbraco.Tests.Benchmarks/Umbraco.Tests.Benchmarks.csproj
+++ b/src/Umbraco.Tests.Benchmarks/Umbraco.Tests.Benchmarks.csproj
@@ -12,6 +12,7 @@
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <Deterministic>true</Deterministic>
+    <LangVersion>8</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
diff --git a/src/Umbraco.Tests/Umbraco.Tests.csproj b/src/Umbraco.Tests/Umbraco.Tests.csproj
index c17f051411..9c8bba7631 100644
--- a/src/Umbraco.Tests/Umbraco.Tests.csproj
+++ b/src/Umbraco.Tests/Umbraco.Tests.csproj
@@ -42,7 +42,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>
-    <LangVersion>latest</LangVersion>
+    <LangVersion>8</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
diff --git a/src/Umbraco.Web.BackOffice/Umbraco.Web.BackOffice.csproj b/src/Umbraco.Web.BackOffice/Umbraco.Web.BackOffice.csproj
index ca260b12f5..3b179fbd47 100644
--- a/src/Umbraco.Web.BackOffice/Umbraco.Web.BackOffice.csproj
+++ b/src/Umbraco.Web.BackOffice/Umbraco.Web.BackOffice.csproj
@@ -3,14 +3,10 @@
     <PropertyGroup>
         <TargetFramework>netcoreapp3.1</TargetFramework>
         <OutputType>Library</OutputType>
+        <LangVersion>8</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
-        <FrameworkReference Include="Microsoft.AspNetCore.App" />
-    </ItemGroup>
-
-    <ItemGroup>
-      <ProjectReference Include="..\Umbraco.Abstractions\Umbraco.Abstractions.csproj" />
       <ProjectReference Include="..\Umbraco.Configuration\Umbraco.Configuration.csproj" />
       <ProjectReference Include="..\Umbraco.Core\Umbraco.Core.csproj" />
       <ProjectReference Include="..\Umbraco.Infrastructure\Umbraco.Infrastructure.csproj" />
diff --git a/src/Umbraco.Web.Website/Umbraco.Web.Website.csproj b/src/Umbraco.Web.Website/Umbraco.Web.Website.csproj
index e0d7f2eb6a..d0c2bd9e6d 100644
--- a/src/Umbraco.Web.Website/Umbraco.Web.Website.csproj
+++ b/src/Umbraco.Web.Website/Umbraco.Web.Website.csproj
@@ -6,7 +6,6 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <ProjectReference Include="..\Umbraco.Abstractions\Umbraco.Abstractions.csproj" />
         <ProjectReference Include="..\Umbraco.Core\Umbraco.Core.csproj" />
         <ProjectReference Include="..\Umbraco.Infrastructure\Umbraco.Infrastructure.csproj" />
     </ItemGroup>
diff --git a/src/Umbraco.Web/Umbraco.Web.csproj b/src/Umbraco.Web/Umbraco.Web.csproj
index 5e7654e896..1843ffabf7 100755
--- a/src/Umbraco.Web/Umbraco.Web.csproj
+++ b/src/Umbraco.Web/Umbraco.Web.csproj
@@ -111,10 +111,6 @@
       <Project>{29aa69d9-b597-4395-8d42-43b1263c240a}</Project>
       <Name>Umbraco.Core</Name>
     </ProjectReference>
-    <ProjectReference Include="..\Umbraco.Examine\Umbraco.Examine.csproj">
-      <Project>{f9b7fe05-0f93-4d0d-9c10-690b33ecbbd8}</Project>
-      <Name>Umbraco.Examine</Name>
-    </ProjectReference>
     <ProjectReference Include="..\Umbraco.Infrastructure\Umbraco.Infrastructure.csproj">
       <Project>{3ae7bf57-966b-45a5-910a-954d7c554441}</Project>
       <Name>Umbraco.Infrastructure</Name>