From e998c3d9a866f66fec46bd1cdcc0bc9fd28ea22f Mon Sep 17 00:00:00 2001
From: Alastair Pitts <alastair.pitts@octopus.com>
Date: Wed, 14 Jan 2026 15:17:14 +1100
Subject: [PATCH 1/2] Remove LangVersion from all csproj files

---
 source/Calamari.Aws/Calamari.Aws.csproj                          | 1 -
 source/Calamari.Azure/Calamari.Azure.csproj                      | 1 -
 .../Calamari.AzureAppService.Tests.csproj                        | 1 -
 source/Calamari.AzureAppService/Calamari.AzureAppService.csproj  | 1 -
 .../Calamari.AzureResourceGroup.Tests.csproj                     | 1 -
 .../Calamari.AzureResourceGroup.csproj                           | 1 -
 .../Calamari.AzureScripting.Tests.csproj                         | 1 -
 source/Calamari.AzureScripting/Calamari.AzureScripting.csproj    | 1 -
 .../Calamari.AzureServiceFabric.Tests.csproj                     | 1 -
 .../Calamari.AzureServiceFabric.csproj                           | 1 -
 .../Calamari.AzureWebApp.NetCoreShim.csproj                      | 1 -
 .../Calamari.AzureWebApp.Tests/Calamari.AzureWebApp.Tests.csproj | 1 -
 source/Calamari.AzureWebApp/Calamari.AzureWebApp.csproj          | 1 -
 source/Calamari.CloudAccounts/Calamari.CloudAccounts.csproj      | 1 -
 source/Calamari.Common/Calamari.Common.csproj                    | 1 -
 .../Calamari.ConsolidateCalamariPackages.Api.csproj              | 1 -
 .../Calamari.ConsolidateCalamariPackages.Tests.csproj            | 1 -
 .../Calamari.ConsolidateCalamariPackages.csproj                  | 1 -
 .../Calamari.GoogleCloudAccounts.csproj                          | 1 -
 .../Calamari.GoogleCloudScripting.Tests.csproj                   | 1 -
 .../Calamari.GoogleCloudScripting.csproj                         | 1 -
 source/Calamari.Scripting.Tests/Calamari.Scripting.Tests.csproj  | 1 -
 source/Calamari.Scripting/Calamari.Scripting.csproj              | 1 -
 source/Calamari.Shared/Calamari.Shared.csproj                    | 1 -
 source/Calamari.Terraform.Tests/Calamari.Terraform.Tests.csproj  | 1 -
 source/Calamari.Terraform/Calamari.Terraform.csproj              | 1 -
 source/Calamari.Testing/Calamari.Testing.csproj                  | 1 -
 source/Calamari.Tests/Calamari.Tests.csproj                      | 1 -
 source/Calamari/Calamari.csproj                                  | 1 -
 29 files changed, 29 deletions(-)

diff --git a/source/Calamari.Aws/Calamari.Aws.csproj b/source/Calamari.Aws/Calamari.Aws.csproj
index da7185a30c..00b1f88649 100644
--- a/source/Calamari.Aws/Calamari.Aws.csproj
+++ b/source/Calamari.Aws/Calamari.Aws.csproj
@@ -19,7 +19,6 @@
     <ApplicationIcon />
     <StartupObject />
     <TargetFramework>net8.0</TargetFramework>
-    <LangVersion>default</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
diff --git a/source/Calamari.Azure/Calamari.Azure.csproj b/source/Calamari.Azure/Calamari.Azure.csproj
index bef28bbf97..64569b4ee2 100644
--- a/source/Calamari.Azure/Calamari.Azure.csproj
+++ b/source/Calamari.Azure/Calamari.Azure.csproj
@@ -6,7 +6,6 @@
         <Authors>Octopus Deploy</Authors>
         <Copyright>Octopus Deploy Pty Ltd</Copyright>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
-        <LangVersion>default</LangVersion>
         <TargetFramework>net8.0</TargetFramework>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
diff --git a/source/Calamari.AzureAppService.Tests/Calamari.AzureAppService.Tests.csproj b/source/Calamari.AzureAppService.Tests/Calamari.AzureAppService.Tests.csproj
index e70a736596..d605e8d16f 100644
--- a/source/Calamari.AzureAppService.Tests/Calamari.AzureAppService.Tests.csproj
+++ b/source/Calamari.AzureAppService.Tests/Calamari.AzureAppService.Tests.csproj
@@ -5,7 +5,6 @@
     <AssemblyName>Calamari.AzureAppService.Tests</AssemblyName>
     <IsPackable>false</IsPackable>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
-    <LangVersion>default</LangVersion>
     <TargetFramework>net8.0</TargetFramework>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
diff --git a/source/Calamari.AzureAppService/Calamari.AzureAppService.csproj b/source/Calamari.AzureAppService/Calamari.AzureAppService.csproj
index e3dcac70c0..581439b233 100644
--- a/source/Calamari.AzureAppService/Calamari.AzureAppService.csproj
+++ b/source/Calamari.AzureAppService/Calamari.AzureAppService.csproj
@@ -7,7 +7,6 @@
     <IsPackable>true</IsPackable>
     <OutputType>Exe</OutputType>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
-    <LangVersion>default</LangVersion>
     <NoWarn>NU5104</NoWarn>
     <TargetFramework>net8.0</TargetFramework>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/source/Calamari.AzureResourceGroup.Tests/Calamari.AzureResourceGroup.Tests.csproj b/source/Calamari.AzureResourceGroup.Tests/Calamari.AzureResourceGroup.Tests.csproj
index b1a3b5f0a9..dd0f12e4cf 100644
--- a/source/Calamari.AzureResourceGroup.Tests/Calamari.AzureResourceGroup.Tests.csproj
+++ b/source/Calamari.AzureResourceGroup.Tests/Calamari.AzureResourceGroup.Tests.csproj
@@ -5,7 +5,6 @@
     <IsPackable>false</IsPackable>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
     <TargetFramework>net8.0</TargetFramework>
-    <LangVersion>default</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
diff --git a/source/Calamari.AzureResourceGroup/Calamari.AzureResourceGroup.csproj b/source/Calamari.AzureResourceGroup/Calamari.AzureResourceGroup.csproj
index 5240e796d3..960bbf8e4f 100644
--- a/source/Calamari.AzureResourceGroup/Calamari.AzureResourceGroup.csproj
+++ b/source/Calamari.AzureResourceGroup/Calamari.AzureResourceGroup.csproj
@@ -2,7 +2,6 @@
     <PropertyGroup>
         <RootNamespace>Calamari.AzureResourceGroup</RootNamespace>
         <AssemblyName>Calamari.AzureResourceGroup</AssemblyName>
-        <LangVersion>default</LangVersion>
         <Nullable>enable</Nullable>
         <OutputType>Exe</OutputType>
         <IsPackable>false</IsPackable>
diff --git a/source/Calamari.AzureScripting.Tests/Calamari.AzureScripting.Tests.csproj b/source/Calamari.AzureScripting.Tests/Calamari.AzureScripting.Tests.csproj
index 6c5bae0dc8..163c40535c 100644
--- a/source/Calamari.AzureScripting.Tests/Calamari.AzureScripting.Tests.csproj
+++ b/source/Calamari.AzureScripting.Tests/Calamari.AzureScripting.Tests.csproj
@@ -3,7 +3,6 @@
     <PropertyGroup>
         <RootNamespace>Calamari.AzureScripting.Tests</RootNamespace>
         <AssemblyName>Calamari.AzureScripting.Tests</AssemblyName>
-        <LangVersion>default</LangVersion>
         <Nullable>enable</Nullable>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
         <IsPackable>false</IsPackable>
diff --git a/source/Calamari.AzureScripting/Calamari.AzureScripting.csproj b/source/Calamari.AzureScripting/Calamari.AzureScripting.csproj
index 763bdf055f..201deeeb6c 100644
--- a/source/Calamari.AzureScripting/Calamari.AzureScripting.csproj
+++ b/source/Calamari.AzureScripting/Calamari.AzureScripting.csproj
@@ -2,7 +2,6 @@
     <PropertyGroup>
         <AssemblyName>Calamari.AzureScripting</AssemblyName>
         <RootNamespace>Calamari.AzureScripting</RootNamespace>
-        <LangVersion>default</LangVersion>
         <Nullable>enable</Nullable>
         <OutputType>Exe</OutputType>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/source/Calamari.AzureServiceFabric.Tests/Calamari.AzureServiceFabric.Tests.csproj b/source/Calamari.AzureServiceFabric.Tests/Calamari.AzureServiceFabric.Tests.csproj
index 3eccb380df..e383bd00be 100644
--- a/source/Calamari.AzureServiceFabric.Tests/Calamari.AzureServiceFabric.Tests.csproj
+++ b/source/Calamari.AzureServiceFabric.Tests/Calamari.AzureServiceFabric.Tests.csproj
@@ -6,7 +6,6 @@
         <IsPackable>false</IsPackable>
         <TargetFramework>net8.0-windows</TargetFramework>
         <RuntimeIdentifiers>win-x64</RuntimeIdentifiers>
-        <LangVersion>default</LangVersion>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
     <ItemGroup>
diff --git a/source/Calamari.AzureServiceFabric/Calamari.AzureServiceFabric.csproj b/source/Calamari.AzureServiceFabric/Calamari.AzureServiceFabric.csproj
index de226cf0eb..d6734fe7e2 100644
--- a/source/Calamari.AzureServiceFabric/Calamari.AzureServiceFabric.csproj
+++ b/source/Calamari.AzureServiceFabric/Calamari.AzureServiceFabric.csproj
@@ -7,7 +7,6 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net8.0-windows</TargetFramework>
     <RuntimeIdentifiers>win-x64</RuntimeIdentifiers>
-    <LangVersion>default</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/source/Calamari.AzureWebApp.NetCoreShim/Calamari.AzureWebApp.NetCoreShim.csproj b/source/Calamari.AzureWebApp.NetCoreShim/Calamari.AzureWebApp.NetCoreShim.csproj
index 0f104191b8..22d0514f48 100644
--- a/source/Calamari.AzureWebApp.NetCoreShim/Calamari.AzureWebApp.NetCoreShim.csproj
+++ b/source/Calamari.AzureWebApp.NetCoreShim/Calamari.AzureWebApp.NetCoreShim.csproj
@@ -3,7 +3,6 @@
     <PropertyGroup>
         <OutputType>Exe</OutputType>
         <TargetFramework>net462</TargetFramework>
-        <LangVersion>default</LangVersion>
         <!-- CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. -->
         <NoWarn>CS8632</NoWarn>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/source/Calamari.AzureWebApp.Tests/Calamari.AzureWebApp.Tests.csproj b/source/Calamari.AzureWebApp.Tests/Calamari.AzureWebApp.Tests.csproj
index e35abfbf5a..0b6a698239 100644
--- a/source/Calamari.AzureWebApp.Tests/Calamari.AzureWebApp.Tests.csproj
+++ b/source/Calamari.AzureWebApp.Tests/Calamari.AzureWebApp.Tests.csproj
@@ -4,7 +4,6 @@
     <AssemblyName>Calamari.AzureWebApp.Tests</AssemblyName>
     <TargetFramework>net8.0</TargetFramework>
     <RuntimeIdentifiers>win-x64</RuntimeIdentifiers>
-    <LangVersion>default</LangVersion>
     <IsPackable>false</IsPackable>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
diff --git a/source/Calamari.AzureWebApp/Calamari.AzureWebApp.csproj b/source/Calamari.AzureWebApp/Calamari.AzureWebApp.csproj
index 49025d9a42..678908382b 100644
--- a/source/Calamari.AzureWebApp/Calamari.AzureWebApp.csproj
+++ b/source/Calamari.AzureWebApp/Calamari.AzureWebApp.csproj
@@ -8,7 +8,6 @@
     <LangVersion>8.0</LangVersion>
     <TargetFramework>net8.0</TargetFramework>
     <RuntimeIdentifiers>win-x64</RuntimeIdentifiers>
-    <LangVersion>default</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/source/Calamari.CloudAccounts/Calamari.CloudAccounts.csproj b/source/Calamari.CloudAccounts/Calamari.CloudAccounts.csproj
index 2b0eabda77..4bb6ecafdf 100644
--- a/source/Calamari.CloudAccounts/Calamari.CloudAccounts.csproj
+++ b/source/Calamari.CloudAccounts/Calamari.CloudAccounts.csproj
@@ -3,7 +3,6 @@
     <PropertyGroup>
         <RootNamespace>Calamari.CloudAccounts</RootNamespace>
         <TargetFramework>net8.0</TargetFramework>
-        <LangVersion>default</LangVersion>
         <PackageId>Octopus.Calamari.CloudAccounts</PackageId>
         <Title>Calamari.CloudAccounts</Title>
         <Authors>Octopus Deploy</Authors>
diff --git a/source/Calamari.Common/Calamari.Common.csproj b/source/Calamari.Common/Calamari.Common.csproj
index 49bfd2c14f..f1b0c6703e 100644
--- a/source/Calamari.Common/Calamari.Common.csproj
+++ b/source/Calamari.Common/Calamari.Common.csproj
@@ -2,7 +2,6 @@
 
     <PropertyGroup>
         <TargetFramework>net8.0</TargetFramework>
-        <LangVersion>default</LangVersion>
         <Nullable>enable</Nullable>
         <PlatformTarget>anycpu</PlatformTarget>
         <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
diff --git a/source/Calamari.ConsolidateCalamariPackages.Api/Calamari.ConsolidateCalamariPackages.Api.csproj b/source/Calamari.ConsolidateCalamariPackages.Api/Calamari.ConsolidateCalamariPackages.Api.csproj
index 3bea38be8a..0270115b70 100644
--- a/source/Calamari.ConsolidateCalamariPackages.Api/Calamari.ConsolidateCalamariPackages.Api.csproj
+++ b/source/Calamari.ConsolidateCalamariPackages.Api/Calamari.ConsolidateCalamariPackages.Api.csproj
@@ -6,7 +6,6 @@
         <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
-        <LangVersion>default</LangVersion>
         <Authors>Octopus Deploy</Authors>
         <Copyright>Octopus Deploy Pty Ltd</Copyright>
         <Description>
diff --git a/source/Calamari.ConsolidateCalamariPackages.Tests/Calamari.ConsolidateCalamariPackages.Tests.csproj b/source/Calamari.ConsolidateCalamariPackages.Tests/Calamari.ConsolidateCalamariPackages.Tests.csproj
index d2ff2336b5..3b0e227376 100644
--- a/source/Calamari.ConsolidateCalamariPackages.Tests/Calamari.ConsolidateCalamariPackages.Tests.csproj
+++ b/source/Calamari.ConsolidateCalamariPackages.Tests/Calamari.ConsolidateCalamariPackages.Tests.csproj
@@ -2,7 +2,6 @@
 
     <PropertyGroup>
         <TargetFramework>net8.0</TargetFramework>
-        <LangVersion>default</LangVersion>
         <IsPackable>false</IsPackable>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
diff --git a/source/Calamari.ConsolidateCalamariPackages/Calamari.ConsolidateCalamariPackages.csproj b/source/Calamari.ConsolidateCalamariPackages/Calamari.ConsolidateCalamariPackages.csproj
index cec3a1dc67..7a93745308 100644
--- a/source/Calamari.ConsolidateCalamariPackages/Calamari.ConsolidateCalamariPackages.csproj
+++ b/source/Calamari.ConsolidateCalamariPackages/Calamari.ConsolidateCalamariPackages.csproj
@@ -4,7 +4,6 @@
         <RootNamespace>Octopus.Calamari.ConsolidatedPackage</RootNamespace>
         <AssemblyName>Octopus.Calamari.ConsolidatedPackage</AssemblyName>
         <TargetFramework>net8.0</TargetFramework>
-        <LangVersion>default</LangVersion>
         <IsPackable>true</IsPackable>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
         <Authors>Octopus Deploy</Authors>
diff --git a/source/Calamari.GoogleCloudAccounts/Calamari.GoogleCloudAccounts.csproj b/source/Calamari.GoogleCloudAccounts/Calamari.GoogleCloudAccounts.csproj
index 518f285456..012535291a 100644
--- a/source/Calamari.GoogleCloudAccounts/Calamari.GoogleCloudAccounts.csproj
+++ b/source/Calamari.GoogleCloudAccounts/Calamari.GoogleCloudAccounts.csproj
@@ -3,7 +3,6 @@
     <PropertyGroup>
         <RootNamespace>Calamari.GoogleCloudAccounts</RootNamespace>
         <TargetFramework>net8.0</TargetFramework>
-        <LangVersion>default</LangVersion>
         <!-- CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. -->
         <NoWarn>CS8632</NoWarn>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/source/Calamari.GoogleCloudScripting.Tests/Calamari.GoogleCloudScripting.Tests.csproj b/source/Calamari.GoogleCloudScripting.Tests/Calamari.GoogleCloudScripting.Tests.csproj
index a94cce45ed..bb23de344f 100644
--- a/source/Calamari.GoogleCloudScripting.Tests/Calamari.GoogleCloudScripting.Tests.csproj
+++ b/source/Calamari.GoogleCloudScripting.Tests/Calamari.GoogleCloudScripting.Tests.csproj
@@ -3,7 +3,6 @@
     <PropertyGroup>
         <AssemblyName>Calamari.GoogleCloudScripting.Tests</AssemblyName>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
-        <LangVersion>default</LangVersion>
         <IsPackable>false</IsPackable>
         <Nullable>enable</Nullable>
         <TargetFramework>net8.0</TargetFramework>
diff --git a/source/Calamari.GoogleCloudScripting/Calamari.GoogleCloudScripting.csproj b/source/Calamari.GoogleCloudScripting/Calamari.GoogleCloudScripting.csproj
index 0beec07bdc..1d7c506ad5 100644
--- a/source/Calamari.GoogleCloudScripting/Calamari.GoogleCloudScripting.csproj
+++ b/source/Calamari.GoogleCloudScripting/Calamari.GoogleCloudScripting.csproj
@@ -4,7 +4,6 @@
         <AssemblyName>Calamari.GoogleCloudScripting</AssemblyName>
         <OutputType>Exe</OutputType>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
-        <LangVersion>default</LangVersion>
         <IsPackable>false</IsPackable>
         <ValidateExecutableReferencesMatchSelfContained>false</ValidateExecutableReferencesMatchSelfContained>
         <TargetFramework>net8.0</TargetFramework>
diff --git a/source/Calamari.Scripting.Tests/Calamari.Scripting.Tests.csproj b/source/Calamari.Scripting.Tests/Calamari.Scripting.Tests.csproj
index e6954b932c..90f74af71d 100644
--- a/source/Calamari.Scripting.Tests/Calamari.Scripting.Tests.csproj
+++ b/source/Calamari.Scripting.Tests/Calamari.Scripting.Tests.csproj
@@ -5,7 +5,6 @@
         <TargetFramework>net8.0</TargetFramework>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
         <IsPackable>false</IsPackable>
-        <LangVersion>default</LangVersion>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
     <ItemGroup>
diff --git a/source/Calamari.Scripting/Calamari.Scripting.csproj b/source/Calamari.Scripting/Calamari.Scripting.csproj
index 5fe1e153af..9157257c8f 100644
--- a/source/Calamari.Scripting/Calamari.Scripting.csproj
+++ b/source/Calamari.Scripting/Calamari.Scripting.csproj
@@ -7,7 +7,6 @@
         <Nullable>enable</Nullable>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
         <IsPackable>true</IsPackable>
-        <LangVersion>default</LangVersion>
         <TargetFramework>net8.0</TargetFramework>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
diff --git a/source/Calamari.Shared/Calamari.Shared.csproj b/source/Calamari.Shared/Calamari.Shared.csproj
index 111c189d01..9c63cc5131 100644
--- a/source/Calamari.Shared/Calamari.Shared.csproj
+++ b/source/Calamari.Shared/Calamari.Shared.csproj
@@ -21,7 +21,6 @@
     <ApplicationIcon />
     <StartupObject />
     <RootNamespace>Calamari</RootNamespace>
-    <LangVersion>default</LangVersion>
     <Nullable>enable</Nullable>
     <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
diff --git a/source/Calamari.Terraform.Tests/Calamari.Terraform.Tests.csproj b/source/Calamari.Terraform.Tests/Calamari.Terraform.Tests.csproj
index 2f033d36dd..13d16ad8a0 100644
--- a/source/Calamari.Terraform.Tests/Calamari.Terraform.Tests.csproj
+++ b/source/Calamari.Terraform.Tests/Calamari.Terraform.Tests.csproj
@@ -5,7 +5,6 @@
         <AssemblyName>Calamari.Terraform.Tests</AssemblyName>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
         <IsPackable>false</IsPackable>
-        <LangVersion>default</LangVersion>
         <TargetFramework>net8.0</TargetFramework>
         <!-- CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. -->
         <NoWarn>CS8632</NoWarn>
diff --git a/source/Calamari.Terraform/Calamari.Terraform.csproj b/source/Calamari.Terraform/Calamari.Terraform.csproj
index e3b016bf2a..cbabb7234e 100644
--- a/source/Calamari.Terraform/Calamari.Terraform.csproj
+++ b/source/Calamari.Terraform/Calamari.Terraform.csproj
@@ -5,7 +5,6 @@
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <IsPackable>false</IsPackable>
     <OutputType>Exe</OutputType>
-    <LangVersion>default</LangVersion>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
     <TargetFramework>net8.0</TargetFramework>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/source/Calamari.Testing/Calamari.Testing.csproj b/source/Calamari.Testing/Calamari.Testing.csproj
index dce75317ec..d78695c693 100644
--- a/source/Calamari.Testing/Calamari.Testing.csproj
+++ b/source/Calamari.Testing/Calamari.Testing.csproj
@@ -4,7 +4,6 @@
         <Nullable>enable</Nullable>
         <PackageProjectUrl>https://github.com/OctopusDeploy/Calamari/</PackageProjectUrl>
         <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
-        <LangVersion>default</LangVersion>
         <TargetFramework>net8.0</TargetFramework>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
         <PackageId>Octopus.Calamari.Testing</PackageId>
diff --git a/source/Calamari.Tests/Calamari.Tests.csproj b/source/Calamari.Tests/Calamari.Tests.csproj
index 2e93d7e47e..faeb0b5a40 100644
--- a/source/Calamari.Tests/Calamari.Tests.csproj
+++ b/source/Calamari.Tests/Calamari.Tests.csproj
@@ -11,7 +11,6 @@
         <StartupObject/>
         <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
         <TargetFramework>net8.0</TargetFramework>
-        <LangVersion>default</LangVersion>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
         <EmitLegacyAssetsFileItems>true</EmitLegacyAssetsFileItems>
     </PropertyGroup>
diff --git a/source/Calamari/Calamari.csproj b/source/Calamari/Calamari.csproj
index 292a770587..da30a2c1e4 100644
--- a/source/Calamari/Calamari.csproj
+++ b/source/Calamari/Calamari.csproj
@@ -19,7 +19,6 @@
     <RuntimeIdentifiers>win-x64;linux-x64;osx-x64;linux-arm;linux-arm64</RuntimeIdentifiers>
     <ApplicationManifest>Calamari.exe.manifest</ApplicationManifest>
     <TargetFramework>net8.0</TargetFramework>
-    <LangVersion>default</LangVersion>
     <!-- CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. -->
     <NoWarn>CS8632</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>

From 31dcc2caad4588675eb389b7bc9596f0ccf28885 Mon Sep 17 00:00:00 2001
From: Alastair Pitts <alastair.pitts@octopus.com>
Date: Wed, 14 Jan 2026 16:28:18 +1100
Subject: [PATCH 2/2] Remove nullabile symbol

---
 source/Calamari.AzureWebApp.NetCoreShim/AesEncryption.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/Calamari.AzureWebApp.NetCoreShim/AesEncryption.cs b/source/Calamari.AzureWebApp.NetCoreShim/AesEncryption.cs
index 6208486b1f..8b760f3935 100644
--- a/source/Calamari.AzureWebApp.NetCoreShim/AesEncryption.cs
+++ b/source/Calamari.AzureWebApp.NetCoreShim/AesEncryption.cs
@@ -96,7 +96,7 @@ For testing purposes
             }
         }
 
-        Aes GetCryptoProvider(byte[]? iv = null)
+        Aes GetCryptoProvider(byte[] iv = null)
         {
             var provider = new AesCryptoServiceProvider
             {