diff --git a/.github/workflows/build-test.yaml b/.github/workflows/build-test.yaml
index 07d13d90e..e6d1eb194 100644
--- a/.github/workflows/build-test.yaml
+++ b/.github/workflows/build-test.yaml
@@ -136,10 +136,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: 6.x
       - name: Cache NuGet packages
         uses: actions/cache@v4
         with:
@@ -174,10 +170,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: 6.x
       - name: Download Build (Debug)
         uses: actions/download-artifact@v4
         with:
@@ -215,10 +207,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: 6.x
       - name: Download Build (Debug)
         uses: actions/download-artifact@v4
         with:
diff --git a/.github/workflows/oauth2.yaml b/.github/workflows/oauth2.yaml
index efbe4ffee..556826014 100644
--- a/.github/workflows/oauth2.yaml
+++ b/.github/workflows/oauth2.yaml
@@ -19,7 +19,7 @@ jobs:
           submodules: true
       - uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 6.x
+          dotnet-version: 8.x
       - uses: actions/cache@v4
         with:
           path: |
diff --git a/projects/Benchmarks/Benchmarks.csproj b/projects/Benchmarks/Benchmarks.csproj
index 150112587..deae254f2 100644
--- a/projects/Benchmarks/Benchmarks.csproj
+++ b/projects/Benchmarks/Benchmarks.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
diff --git a/projects/Directory.Packages.props b/projects/Directory.Packages.props
index e859bc923..1d76dcea9 100644
--- a/projects/Directory.Packages.props
+++ b/projects/Directory.Packages.props
@@ -14,7 +14,7 @@
       Note: do NOT upgrade the System.IO.Pipelines dependency unless necessary
       See https://github.com/rabbitmq/rabbitmq-dotnet-client/pull/1481#pullrequestreview-1847905299
     -->
-    <PackageVersion Include="System.IO.Pipelines" Version="6.0.0" />
+    <PackageVersion Include="System.IO.Pipelines" Version="8.0.0" />
     <PackageVersion Include="System.Net.Http" Version="4.3.4" />
     <PackageVersion Include="WireMock.Net" Version="1.5.62" />
     <PackageVersion Include="xunit" Version="2.9.0" />
@@ -29,15 +29,15 @@
       * https://github.com/rabbitmq/rabbitmq-dotnet-client/pull/1481#pullrequestreview-1847905299
       * https://github.com/rabbitmq/rabbitmq-dotnet-client/pull/1594
     -->
-    <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="6.0.0" />
+    <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="8.0.1" />
     <PackageVersion Include="System.Memory" Version="4.5.5" />
-    <PackageVersion Include="System.Threading.Channels" Version="6.0.0" />
-    <PackageVersion Include="System.Text.Json" Version="6.0.10" />
-    <PackageVersion Include="System.Net.Http.Json" Version="6.0.0" />
-    <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="6.0.0" />
+    <PackageVersion Include="System.Threading.Channels" Version="8.0.0" />
+    <PackageVersion Include="System.Text.Json" Version="8.0.5" />
+    <PackageVersion Include="System.Net.Http.Json" Version="8.0.1" />
+    <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
   </ItemGroup>
   <ItemGroup Condition="$(TargetFramework)=='net472'">
-    <PackageVersion Include="System.Text.Json" Version="6.0.10" />
+    <PackageVersion Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">
     <GlobalPackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" />
diff --git a/projects/RabbitMQ.Client.OAuth2/RabbitMQ.Client.OAuth2.csproj b/projects/RabbitMQ.Client.OAuth2/RabbitMQ.Client.OAuth2.csproj
index 9504ead77..305935013 100644
--- a/projects/RabbitMQ.Client.OAuth2/RabbitMQ.Client.OAuth2.csproj
+++ b/projects/RabbitMQ.Client.OAuth2/RabbitMQ.Client.OAuth2.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>
     <NoWarn>$(NoWarn);CS1591</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <AssemblyTitle>RabbitMQ OAuth2 Client Library for .NET</AssemblyTitle>
@@ -31,7 +31,7 @@
       https://learn.microsoft.com/en-us/answers/questions/1371494/for-net-standard-2-0-library-why-add-net-core-3-1
       https://devblogs.microsoft.com/dotnet/embracing-nullable-reference-types/#what-should-library-authors-do
     -->
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
diff --git a/projects/RabbitMQ.Client.OpenTelemetry/RabbitMQ.Client.OpenTelemetry.csproj b/projects/RabbitMQ.Client.OpenTelemetry/RabbitMQ.Client.OpenTelemetry.csproj
index 06fa5696f..10efe3c88 100644
--- a/projects/RabbitMQ.Client.OpenTelemetry/RabbitMQ.Client.OpenTelemetry.csproj
+++ b/projects/RabbitMQ.Client.OpenTelemetry/RabbitMQ.Client.OpenTelemetry.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>
     <NoWarn>$(NoWarn);CS1591</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <AssemblyTitle>RabbitMQ OpenTelemetry Integration Package for .NET</AssemblyTitle>
@@ -27,7 +27,7 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageOutputPath>../../packages</PackageOutputPath>
     <PackageReadmeFile>README.md</PackageReadmeFile>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)' == 'Release' And '$(CI)' == 'true'">
diff --git a/projects/RabbitMQ.Client/Impl/SessionBase.cs b/projects/RabbitMQ.Client/Impl/SessionBase.cs
index 863881efd..0e0c363ed 100644
--- a/projects/RabbitMQ.Client/Impl/SessionBase.cs
+++ b/projects/RabbitMQ.Client/Impl/SessionBase.cs
@@ -128,7 +128,7 @@ public virtual ValueTask TransmitAsync<T>(in T cmd, CancellationToken cancellati
                 ThrowAlreadyClosedException();
             }
 
-            RentedMemory bytes = Framing.SerializeToFrames(ref Unsafe.AsRef(cmd), ChannelNumber);
+            RentedMemory bytes = Framing.SerializeToFrames(ref Unsafe.AsRef(in cmd), ChannelNumber);
             RabbitMQActivitySource.PopulateMessageEnvelopeSize(Activity.Current, bytes.Size);
             return Connection.WriteAsync(bytes, cancellationToken);
         }
@@ -142,7 +142,7 @@ public ValueTask TransmitAsync<TMethod, THeader>(in TMethod cmd, in THeader head
                 ThrowAlreadyClosedException();
             }
 
-            RentedMemory bytes = Framing.SerializeToFrames(ref Unsafe.AsRef(cmd), ref Unsafe.AsRef(header), body, ChannelNumber, Connection.MaxPayloadSize);
+            RentedMemory bytes = Framing.SerializeToFrames(ref Unsafe.AsRef(in cmd), ref Unsafe.AsRef(in header), body, ChannelNumber, Connection.MaxPayloadSize);
             RabbitMQActivitySource.PopulateMessageEnvelopeSize(Activity.Current, bytes.Size);
             return Connection.WriteAsync(bytes, cancellationToken);
         }
diff --git a/projects/RabbitMQ.Client/RabbitMQ.Client.csproj b/projects/RabbitMQ.Client/RabbitMQ.Client.csproj
index fbcdd2122..1e7d59b92 100644
--- a/projects/RabbitMQ.Client/RabbitMQ.Client.csproj
+++ b/projects/RabbitMQ.Client/RabbitMQ.Client.csproj
@@ -1,10 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>
     <NoWarn>$(NoWarn);CS1591</NoWarn>
-    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <EnableTrimAnalyzer>true</EnableTrimAnalyzer>
+    <!-- Apply IsTrimmable and EnableTrimAnalyzer only for .NET 8.0 -->
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))">true</IsTrimmable>
+    <EnableTrimAnalyzer Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))">true</EnableTrimAnalyzer>
     <AssemblyTitle>RabbitMQ Client Library for .NET</AssemblyTitle>
     <Authors>Broadcom</Authors>
     <Company>Broadcom, Inc. or its subsidiaries.</Company>
@@ -33,7 +34,7 @@
       https://learn.microsoft.com/en-us/answers/questions/1371494/for-net-standard-2-0-library-why-add-net-core-3-1
       https://devblogs.microsoft.com/dotnet/embracing-nullable-reference-types/#what-should-library-authors-do
     -->
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
diff --git a/projects/RabbitMQ.Client/TypeExtensions.cs b/projects/RabbitMQ.Client/TypeExtensions.cs
index ee1e4f916..97f913911 100644
--- a/projects/RabbitMQ.Client/TypeExtensions.cs
+++ b/projects/RabbitMQ.Client/TypeExtensions.cs
@@ -46,7 +46,7 @@ public static ref byte GetStart(this ReadOnlySpan<byte> span)
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static ref byte GetStart(this byte[] array)
         {
-            return ref Unsafe.AsRef(array[0]);
+            return ref Unsafe.AsRef(in array[0]);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
diff --git a/projects/Test/Applications/CreateChannel/CreateChannel.csproj b/projects/Test/Applications/CreateChannel/CreateChannel.csproj
index 2ff780b2a..ba23a90df 100644
--- a/projects/Test/Applications/CreateChannel/CreateChannel.csproj
+++ b/projects/Test/Applications/CreateChannel/CreateChannel.csproj
@@ -1,20 +1,20 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/projects/Test/Applications/GH-1647/GH-1647.csproj b/projects/Test/Applications/GH-1647/GH-1647.csproj
index 022441c0e..e068a1961 100644
--- a/projects/Test/Applications/GH-1647/GH-1647.csproj
+++ b/projects/Test/Applications/GH-1647/GH-1647.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>GH_1647</RootNamespace>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
diff --git a/projects/Test/Applications/MassPublish/MassPublish.csproj b/projects/Test/Applications/MassPublish/MassPublish.csproj
index 2ff780b2a..ba23a90df 100644
--- a/projects/Test/Applications/MassPublish/MassPublish.csproj
+++ b/projects/Test/Applications/MassPublish/MassPublish.csproj
@@ -1,20 +1,20 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/projects/Test/Applications/PublisherConfirms/PublisherConfirms.csproj b/projects/Test/Applications/PublisherConfirms/PublisherConfirms.csproj
index 9e089be82..0b0de7dd0 100644
--- a/projects/Test/Applications/PublisherConfirms/PublisherConfirms.csproj
+++ b/projects/Test/Applications/PublisherConfirms/PublisherConfirms.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -9,7 +9,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <Nullable>enable</Nullable>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/projects/Test/Common/Common.csproj b/projects/Test/Common/Common.csproj
index 3c283cef8..cc5869cee 100644
--- a/projects/Test/Common/Common.csproj
+++ b/projects/Test/Common/Common.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -16,7 +16,7 @@
     <AssemblyOriginatorKeyFile>../../rabbit.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <IsTestProject>false</IsTestProject>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/projects/Test/Integration/Integration.csproj b/projects/Test/Integration/Integration.csproj
index 64ff8776b..585302a85 100644
--- a/projects/Test/Integration/Integration.csproj
+++ b/projects/Test/Integration/Integration.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -16,7 +16,7 @@
     <AssemblyOriginatorKeyFile>../../rabbit.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <IsTestProject>true</IsTestProject>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/projects/Test/OAuth2/OAuth2.csproj b/projects/Test/OAuth2/OAuth2.csproj
index 11e1123a7..6710e5d21 100644
--- a/projects/Test/OAuth2/OAuth2.csproj
+++ b/projects/Test/OAuth2/OAuth2.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -16,7 +16,7 @@
     <AssemblyOriginatorKeyFile>../../rabbit.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <IsTestProject>true</IsTestProject>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
diff --git a/projects/Test/SequentialIntegration/SequentialIntegration.csproj b/projects/Test/SequentialIntegration/SequentialIntegration.csproj
index 9664afe2b..dff8ad5fb 100644
--- a/projects/Test/SequentialIntegration/SequentialIntegration.csproj
+++ b/projects/Test/SequentialIntegration/SequentialIntegration.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -16,7 +16,7 @@
     <AssemblyOriginatorKeyFile>../../rabbit.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <IsTestProject>true</IsTestProject>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/projects/Test/Unit/Unit.csproj b/projects/Test/Unit/Unit.csproj
index 0a0286a4b..fc23c107a 100644
--- a/projects/Test/Unit/Unit.csproj
+++ b/projects/Test/Unit/Unit.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
   <PropertyGroup Condition="!$([MSBuild]::IsOSPlatform('Windows'))">
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>$(NoWarn);CA2007</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -16,7 +16,7 @@
     <AssemblyOriginatorKeyFile>../../rabbit.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <IsTestProject>true</IsTestProject>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>