diff --git a/build.sh b/build.sh
index ee59d2f61..44e86f8f2 100755
--- a/build.sh
+++ b/build.sh
@@ -4,7 +4,7 @@ set -e
 outputFolder='_output'
 testPackageFolder='_tests'
 artifactsFolder="_artifacts";
-framework="${FRAMEWORK:=net6.0}"
+framework="${FRAMEWORK:=net8.0}"
 
 ProgressStart()
 {
diff --git a/docs.sh b/docs.sh
index 386f5df68..0f3733f4e 100755
--- a/docs.sh
+++ b/docs.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -e
 
-FRAMEWORK="net6.0"
+FRAMEWORK="net8.0"
 PLATFORM=$1
 
 if [ "$PLATFORM" = "Windows" ]; then
diff --git a/global.json b/global.json
index 5f5ece165..fd07d882a 100644
--- a/global.json
+++ b/global.json
@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "6.0.405"
+    "version": "8.0.303"
   }
 }
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 239a98d73..375c71716 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -135,7 +135,7 @@
     <PackageReference Include="NunitXml.TestLogger" Version="3.0.131" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TestProject)'=='true' and '$(TargetFramework)'=='net6.0'">
+  <ItemGroup Condition="'$(TestProject)'=='true' and '$(TargetFramework)'=='net8.0'">
     <PackageReference Include="coverlet.collector" Version="3.0.4-preview.27.ge7cb7c3b40" />
   </ItemGroup>
 
diff --git a/src/NzbDrone.Api.Test/Sonarr.Api.Test.csproj b/src/NzbDrone.Api.Test/Sonarr.Api.Test.csproj
index 053b42cc9..a376886f6 100644
--- a/src/NzbDrone.Api.Test/Sonarr.Api.Test.csproj
+++ b/src/NzbDrone.Api.Test/Sonarr.Api.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
diff --git a/src/NzbDrone.Automation.Test/Sonarr.Automation.Test.csproj b/src/NzbDrone.Automation.Test/Sonarr.Automation.Test.csproj
index 9cf833789..23250be70 100644
--- a/src/NzbDrone.Automation.Test/Sonarr.Automation.Test.csproj
+++ b/src/NzbDrone.Automation.Test/Sonarr.Automation.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
diff --git a/src/NzbDrone.Common.Test/Sonarr.Common.Test.csproj b/src/NzbDrone.Common.Test/Sonarr.Common.Test.csproj
index 402cae2bf..1a553cf8e 100644
--- a/src/NzbDrone.Common.Test/Sonarr.Common.Test.csproj
+++ b/src/NzbDrone.Common.Test/Sonarr.Common.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
diff --git a/src/NzbDrone.Common/Disk/DestinationAlreadyExistsException.cs b/src/NzbDrone.Common/Disk/DestinationAlreadyExistsException.cs
index ffdc36e0e..d96bb22e9 100644
--- a/src/NzbDrone.Common/Disk/DestinationAlreadyExistsException.cs
+++ b/src/NzbDrone.Common/Disk/DestinationAlreadyExistsException.cs
@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Runtime.Serialization;
 
 namespace NzbDrone.Common.Disk
 {
@@ -24,10 +23,5 @@ namespace NzbDrone.Common.Disk
             : base(message, innerException)
         {
         }
-
-        protected DestinationAlreadyExistsException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/src/NzbDrone.Common/Sonarr.Common.csproj b/src/NzbDrone.Common/Sonarr.Common.csproj
index afd914994..7f4f73f98 100644
--- a/src/NzbDrone.Common/Sonarr.Common.csproj
+++ b/src/NzbDrone.Common/Sonarr.Common.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <DefineConstants Condition="'$(RuntimeIdentifier)' == 'linux-musl-x64' or '$(RuntimeIdentifier)' == 'linux-musl-arm64'">ISMUSL</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
diff --git a/src/NzbDrone.Console/Sonarr.Console.csproj b/src/NzbDrone.Console/Sonarr.Console.csproj
index aef81527d..e1c0ae15a 100644
--- a/src/NzbDrone.Console/Sonarr.Console.csproj
+++ b/src/NzbDrone.Console/Sonarr.Console.csproj
@@ -1,9 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>net6.0</TargetFrameworks>
 
     <ApplicationIcon>..\NzbDrone.Host\Sonarr.ico</ApplicationIcon>
+
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
   <PropertyGroup Condition="!$(RuntimeIdentifier.StartsWith('win'))">
     <AssemblyName>Sonarr</AssemblyName>
diff --git a/src/NzbDrone.Core.Test/Sonarr.Core.Test.csproj b/src/NzbDrone.Core.Test/Sonarr.Core.Test.csproj
index 6a1477da4..98d2dab7a 100644
--- a/src/NzbDrone.Core.Test/Sonarr.Core.Test.csproj
+++ b/src/NzbDrone.Core.Test/Sonarr.Core.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Dapper" Version="2.0.123" />
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/RecycleBinException.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/RecycleBinException.cs
index 645951518..9586d0e63 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/RecycleBinException.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/RecycleBinException.cs
@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Runtime.Serialization;
 
 namespace NzbDrone.Core.MediaFiles.EpisodeImport
 {
@@ -19,10 +18,5 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport
             : base(message, innerException)
         {
         }
-
-        protected RecycleBinException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/src/NzbDrone.Core/MediaFiles/EpisodeImport/RootFolderNotFoundException.cs b/src/NzbDrone.Core/MediaFiles/EpisodeImport/RootFolderNotFoundException.cs
index 9690a4028..07aebc9bc 100644
--- a/src/NzbDrone.Core/MediaFiles/EpisodeImport/RootFolderNotFoundException.cs
+++ b/src/NzbDrone.Core/MediaFiles/EpisodeImport/RootFolderNotFoundException.cs
@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Runtime.Serialization;
 
 namespace NzbDrone.Core.MediaFiles.EpisodeImport
 {
@@ -19,10 +18,5 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport
             : base(message, innerException)
         {
         }
-
-        protected RootFolderNotFoundException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
     }
 }
diff --git a/src/NzbDrone.Core/Sonarr.Core.csproj b/src/NzbDrone.Core/Sonarr.Core.csproj
index e66e1483c..badf9ae9d 100644
--- a/src/NzbDrone.Core/Sonarr.Core.csproj
+++ b/src/NzbDrone.Core/Sonarr.Core.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Dapper" Version="2.0.123" />
diff --git a/src/NzbDrone.Host.Test/Sonarr.Host.Test.csproj b/src/NzbDrone.Host.Test/Sonarr.Host.Test.csproj
index 00783be18..e62f81ff1 100644
--- a/src/NzbDrone.Host.Test/Sonarr.Host.Test.csproj
+++ b/src/NzbDrone.Host.Test/Sonarr.Host.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
diff --git a/src/NzbDrone.Host/Sonarr.Host.csproj b/src/NzbDrone.Host/Sonarr.Host.csproj
index 7eb3a4058..3c2e84fb5 100644
--- a/src/NzbDrone.Host/Sonarr.Host.csproj
+++ b/src/NzbDrone.Host/Sonarr.Host.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
   </PropertyGroup>
   <ItemGroup>
diff --git a/src/NzbDrone.Integration.Test/Sonarr.Integration.Test.csproj b/src/NzbDrone.Integration.Test/Sonarr.Integration.Test.csproj
index b78253880..96763f26f 100644
--- a/src/NzbDrone.Integration.Test/Sonarr.Integration.Test.csproj
+++ b/src/NzbDrone.Integration.Test/Sonarr.Integration.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
   </PropertyGroup>
   <ItemGroup>
diff --git a/src/NzbDrone.Libraries.Test/Sonarr.Libraries.Test.csproj b/src/NzbDrone.Libraries.Test/Sonarr.Libraries.Test.csproj
index 511c54cba..b2f6c3002 100644
--- a/src/NzbDrone.Libraries.Test/Sonarr.Libraries.Test.csproj
+++ b/src/NzbDrone.Libraries.Test/Sonarr.Libraries.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
diff --git a/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj b/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj
index 60c6f901c..6f067e499 100644
--- a/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj
+++ b/src/NzbDrone.Mono.Test/Sonarr.Mono.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <!--
        The netstandard version here doesn't work in net framework
diff --git a/src/NzbDrone.Mono/Sonarr.Mono.csproj b/src/NzbDrone.Mono/Sonarr.Mono.csproj
index 7901ccd16..ec9e47f03 100644
--- a/src/NzbDrone.Mono/Sonarr.Mono.csproj
+++ b/src/NzbDrone.Mono/Sonarr.Mono.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
   </PropertyGroup>
   <!-- 
diff --git a/src/NzbDrone.SignalR/Sonarr.SignalR.csproj b/src/NzbDrone.SignalR/Sonarr.SignalR.csproj
index 19349baa6..0dbe8812b 100644
--- a/src/NzbDrone.SignalR/Sonarr.SignalR.csproj
+++ b/src/NzbDrone.SignalR/Sonarr.SignalR.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
   </PropertyGroup>
   <ItemGroup>
diff --git a/src/NzbDrone.Test.Common/NzbDroneRunner.cs b/src/NzbDrone.Test.Common/NzbDroneRunner.cs
index 25f977fce..6caae84d3 100644
--- a/src/NzbDrone.Test.Common/NzbDroneRunner.cs
+++ b/src/NzbDrone.Test.Common/NzbDroneRunner.cs
@@ -55,7 +55,7 @@ namespace NzbDrone.Test.Common
 
             if (BuildInfo.IsDebug)
             {
-                Start(Path.Combine(TestContext.CurrentContext.TestDirectory, "..", "..", "_output", "net6.0", consoleExe));
+                Start(Path.Combine(TestContext.CurrentContext.TestDirectory, "..", "..", "_output", "net8.0", consoleExe));
             }
             else
             {
diff --git a/src/NzbDrone.Test.Common/Sonarr.Test.Common.csproj b/src/NzbDrone.Test.Common/Sonarr.Test.Common.csproj
index bc5f721f6..c2b164108 100644
--- a/src/NzbDrone.Test.Common/Sonarr.Test.Common.csproj
+++ b/src/NzbDrone.Test.Common/Sonarr.Test.Common.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="6.10.0" />
diff --git a/src/NzbDrone.Test.Dummy/Sonarr.Test.Dummy.csproj b/src/NzbDrone.Test.Dummy/Sonarr.Test.Dummy.csproj
index 9d17bf8f8..e9223712f 100644
--- a/src/NzbDrone.Test.Dummy/Sonarr.Test.Dummy.csproj
+++ b/src/NzbDrone.Test.Dummy/Sonarr.Test.Dummy.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/src/NzbDrone.Update.Test/Sonarr.Update.Test.csproj b/src/NzbDrone.Update.Test/Sonarr.Update.Test.csproj
index 5b4d7dfd7..9f62e562a 100644
--- a/src/NzbDrone.Update.Test/Sonarr.Update.Test.csproj
+++ b/src/NzbDrone.Update.Test/Sonarr.Update.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
diff --git a/src/NzbDrone.Update/Sonarr.Update.csproj b/src/NzbDrone.Update/Sonarr.Update.csproj
index 624151093..3a5335633 100644
--- a/src/NzbDrone.Update/Sonarr.Update.csproj
+++ b/src/NzbDrone.Update/Sonarr.Update.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="DryIoc.dll" Version="5.4.3" />
diff --git a/src/NzbDrone.Windows.Test/Sonarr.Windows.Test.csproj b/src/NzbDrone.Windows.Test/Sonarr.Windows.Test.csproj
index 15bcf5d51..8edec17bb 100644
--- a/src/NzbDrone.Windows.Test/Sonarr.Windows.Test.csproj
+++ b/src/NzbDrone.Windows.Test/Sonarr.Windows.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
diff --git a/src/NzbDrone.Windows/Sonarr.Windows.csproj b/src/NzbDrone.Windows/Sonarr.Windows.csproj
index 96ab6ac02..622a2e23e 100644
--- a/src/NzbDrone.Windows/Sonarr.Windows.csproj
+++ b/src/NzbDrone.Windows/Sonarr.Windows.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
   </PropertyGroup>
   <ItemGroup>
diff --git a/src/NzbDrone/Sonarr.csproj b/src/NzbDrone/Sonarr.csproj
index 77a39e69c..753da33ba 100644
--- a/src/NzbDrone/Sonarr.csproj
+++ b/src/NzbDrone/Sonarr.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFrameworks>net6.0-windows</TargetFrameworks>
+    <TargetFrameworks>net8.0-windows</TargetFrameworks>
     <RuntimeIdentifiers>win-x64;win-x86</RuntimeIdentifiers>
     <UseWindowsForms>true</UseWindowsForms>
     <ApplicationIcon>..\NzbDrone.Host\Sonarr.ico</ApplicationIcon>
diff --git a/src/ServiceHelpers/ServiceInstall/ServiceInstall.csproj b/src/ServiceHelpers/ServiceInstall/ServiceInstall.csproj
index 967ce008c..fa4014f43 100644
--- a/src/ServiceHelpers/ServiceInstall/ServiceInstall.csproj
+++ b/src/ServiceHelpers/ServiceInstall/ServiceInstall.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="System.Security.Principal.Windows" Version="6.0.0-preview.5.21301.5" />
diff --git a/src/ServiceHelpers/ServiceUninstall/ServiceUninstall.csproj b/src/ServiceHelpers/ServiceUninstall/ServiceUninstall.csproj
index 967ce008c..fa4014f43 100644
--- a/src/ServiceHelpers/ServiceUninstall/ServiceUninstall.csproj
+++ b/src/ServiceHelpers/ServiceUninstall/ServiceUninstall.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="System.Security.Principal.Windows" Version="6.0.0-preview.5.21301.5" />
diff --git a/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj b/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj
index 659783773..3ae58a6e0 100644
--- a/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj
+++ b/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentValidation" Version="9.5.4" />
diff --git a/src/Sonarr.Http/Authentication/ApiKeyAuthenticationHandler.cs b/src/Sonarr.Http/Authentication/ApiKeyAuthenticationHandler.cs
index 864dd3644..af1caf833 100644
--- a/src/Sonarr.Http/Authentication/ApiKeyAuthenticationHandler.cs
+++ b/src/Sonarr.Http/Authentication/ApiKeyAuthenticationHandler.cs
@@ -28,9 +28,8 @@ namespace Sonarr.Http.Authentication
         public ApiKeyAuthenticationHandler(IOptionsMonitor<ApiKeyAuthenticationOptions> options,
             ILoggerFactory logger,
             UrlEncoder encoder,
-            ISystemClock clock,
             IConfigFileProvider config)
-            : base(options, logger, encoder, clock)
+            : base(options, logger, encoder)
         {
             _apiKey = config.ApiKey;
         }
diff --git a/src/Sonarr.Http/Authentication/BasicAuthenticationHandler.cs b/src/Sonarr.Http/Authentication/BasicAuthenticationHandler.cs
index 41dc5aad2..d9766cf16 100644
--- a/src/Sonarr.Http/Authentication/BasicAuthenticationHandler.cs
+++ b/src/Sonarr.Http/Authentication/BasicAuthenticationHandler.cs
@@ -20,9 +20,8 @@ namespace Sonarr.Http.Authentication
         public BasicAuthenticationHandler(IAuthenticationService authService,
             IOptionsMonitor<AuthenticationSchemeOptions> options,
             ILoggerFactory logger,
-            UrlEncoder encoder,
-            ISystemClock clock)
-            : base(options, logger, encoder, clock)
+            UrlEncoder encoder)
+            : base(options, logger, encoder)
         {
             _authService = authService;
         }
@@ -71,7 +70,7 @@ namespace Sonarr.Http.Authentication
 
         protected override Task HandleChallengeAsync(AuthenticationProperties properties)
         {
-            Response.Headers.Add("WWW-Authenticate", $"Basic realm=\"{BuildInfo.AppName}\"");
+            Response.Headers["WWW-Authenticate"] = $"Basic realm=\"{BuildInfo.AppName}\"";
             Response.StatusCode = 401;
             return Task.CompletedTask;
         }
diff --git a/src/Sonarr.Http/Authentication/NoAuthenticationHandler.cs b/src/Sonarr.Http/Authentication/NoAuthenticationHandler.cs
index da1c8b04b..7c62a1c8b 100644
--- a/src/Sonarr.Http/Authentication/NoAuthenticationHandler.cs
+++ b/src/Sonarr.Http/Authentication/NoAuthenticationHandler.cs
@@ -13,9 +13,8 @@ namespace Sonarr.Http.Authentication
     {
         public NoAuthenticationHandler(IOptionsMonitor<AuthenticationSchemeOptions> options,
             ILoggerFactory logger,
-            UrlEncoder encoder,
-            ISystemClock clock)
-            : base(options, logger, encoder, clock)
+            UrlEncoder encoder)
+            : base(options, logger, encoder)
         {
         }
 
diff --git a/src/Sonarr.Http/Middleware/VersionMiddleware.cs b/src/Sonarr.Http/Middleware/VersionMiddleware.cs
index abb443944..bf3e48c5e 100644
--- a/src/Sonarr.Http/Middleware/VersionMiddleware.cs
+++ b/src/Sonarr.Http/Middleware/VersionMiddleware.cs
@@ -22,7 +22,7 @@ namespace Sonarr.Http.Middleware
         {
             if (context.Request.IsApiRequest() && !context.Response.Headers.ContainsKey(VERSIONHEADER))
             {
-                context.Response.Headers.Add(VERSIONHEADER, _version);
+                context.Response.Headers[VERSIONHEADER] = _version;
             }
 
             await _next(context);
diff --git a/src/Sonarr.Http/REST/RestController.cs b/src/Sonarr.Http/REST/RestController.cs
index 7632d8b7f..6f170ebcd 100644
--- a/src/Sonarr.Http/REST/RestController.cs
+++ b/src/Sonarr.Http/REST/RestController.cs
@@ -102,7 +102,7 @@ namespace Sonarr.Http.REST
             if (controllerAttributes.Any(x => x.AttributeType == DEPRECATED_ATTRIBUTE) || attributes.Any(x => x.AttributeType == DEPRECATED_ATTRIBUTE))
             {
                 _logger.Warn("API call made to deprecated endpoint from {0}", Request.Headers.UserAgent.ToString());
-                Response.Headers.Add("Deprecation", "true");
+                Response.Headers["Deprecation"] = "true";
             }
 
             base.OnActionExecuting(context);
diff --git a/src/Sonarr.Http/Sonarr.Http.csproj b/src/Sonarr.Http/Sonarr.Http.csproj
index 6c0adc7d8..5881f253a 100644
--- a/src/Sonarr.Http/Sonarr.Http.csproj
+++ b/src/Sonarr.Http/Sonarr.Http.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentValidation" Version="9.5.4" />
diff --git a/src/Sonarr.RuntimePatches/Sonarr.RuntimePatches.csproj b/src/Sonarr.RuntimePatches/Sonarr.RuntimePatches.csproj
index 7cf363008..88ae7773b 100644
--- a/src/Sonarr.RuntimePatches/Sonarr.RuntimePatches.csproj
+++ b/src/Sonarr.RuntimePatches/Sonarr.RuntimePatches.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">  
   <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
   </PropertyGroup>  
   <ItemGroup>
     <PackageReference Include="Lib.Harmony" Version="2.0.1" />