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 a65e4e4eda..1e9d344530 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.Examine/Umbraco.Examine.csproj b/src/Umbraco.Examine/Umbraco.Examine.csproj
index d14fbb4470..5fbd34a4d1 100644
--- a/src/Umbraco.Examine/Umbraco.Examine.csproj
+++ b/src/Umbraco.Examine/Umbraco.Examine.csproj
@@ -4,6 +4,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyName>Umbraco.Examine</AssemblyName>
     <RootNamespace>Umbraco.Examine</RootNamespace>
+    <LangVersion>8</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Umbraco.Infrastructure/Umbraco.Infrastructure.csproj b/src/Umbraco.Infrastructure/Umbraco.Infrastructure.csproj
index 4682df8054..f26378a501 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 5e71b2d9ec..83667bdbd8 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 5f8dcbe51d..70df913d01 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 3b6456c62b..347e4d5531 100644
--- a/src/Umbraco.Web.BackOffice/Umbraco.Web.BackOffice.csproj
+++ b/src/Umbraco.Web.BackOffice/Umbraco.Web.BackOffice.csproj
@@ -2,6 +2,7 @@
 
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
+        <LangVersion>8</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>