diff --git a/appveyor.yml b/appveyor.yml
index dd82465d..b8ace0fc 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,7 +1,7 @@
 image: Visual Studio 2022
 
 environment:
-  CLI_CHANNEL: 6.0.1xx
+  CLI_CHANNEL: 8.0
 
 install:
   - ps: $env:DOTNET_INSTALL_DIR = "$pwd\.dotnetsdk"
diff --git a/global.json b/global.json
index dffff818..c7e4561c 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "6.0.100",
+    "version": "8.0.100",
     "rollForward" : "latestFeature",
     "allowPrerelease": false
   }
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 2a57b873..ddf9e4ec 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -22,7 +22,7 @@
 
   <ItemGroup>
     <PackageReference Include="StyleCop.Analyzers.Unstable" Version="1.2.0.556" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.4" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeStyle" Version="3.11.0" PrivateAssets="all" />
     <PackageReference Include="CSharpIsNullAnalyzer" Version="0.1.593" PrivateAssets="all" />
   </ItemGroup>
@@ -31,9 +31,9 @@
     <GenerateNullableAttributes>false</GenerateNullableAttributes>
   </PropertyGroup>
 
-  <!-- Get nullability information from .NET7.0 when compiling for non net7.0 targets -->
-  <ItemGroup Condition="'$(TargetFramework)' != 'net7.0'">
-    <PackageDownload Include="Microsoft.NETCore.App.Ref" Version="[7.0.0]" />
+  <!-- Get nullability information from .NET8.0 when compiling for non net8.0 targets -->
+  <ItemGroup Condition="'$(TargetFramework)' != 'net8.0'">
+    <PackageDownload Include="Microsoft.NETCore.App.Ref" Version="[8.0.0]" />
     <PackageReference Include="TunnelVisionLabs.ReferenceAssemblyAnnotator" Version="1.0.0-alpha.160" PrivateAssets="all" />
   </ItemGroup>
 
diff --git a/src/nunit.analyzers.tests/DiagnosticSuppressors/AvoidUninstantiatedInternalClassesSuppressorTests.cs b/src/nunit.analyzers.tests/DiagnosticSuppressors/AvoidUninstantiatedInternalClassesSuppressorTests.cs
index 8dbba997..1f44b734 100644
--- a/src/nunit.analyzers.tests/DiagnosticSuppressors/AvoidUninstantiatedInternalClassesSuppressorTests.cs
+++ b/src/nunit.analyzers.tests/DiagnosticSuppressors/AvoidUninstantiatedInternalClassesSuppressorTests.cs
@@ -59,7 +59,7 @@ public void OneTimeSetUp()
         {
             // Find the NetAnalyzers assembly (note version should match the one referenced)
             string netAnalyzersPath = Path.Combine(PathHelper.GetNuGetPackageDirectory(),
-                "microsoft.codeanalysis.netanalyzers/7.0.4/analyzers/dotnet/cs/Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll");
+                "microsoft.codeanalysis.netanalyzers/8.0.0/analyzers/dotnet/cs/Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll");
             Assembly netAnalyzerAssembly = Assembly.LoadFrom(netAnalyzersPath);
             Type analyzerType = netAnalyzerAssembly.GetType("Microsoft.CodeQuality.CSharp.Analyzers.Maintainability.CSharpAvoidUninstantiatedInternalClasses", true)!;
             this.analyzer = (DiagnosticAnalyzer)Activator.CreateInstance(analyzerType)!;
diff --git a/src/nunit.analyzers.tests/DiagnosticSuppressors/DisposableFieldsSuppressorTests.cs b/src/nunit.analyzers.tests/DiagnosticSuppressors/DisposableFieldsSuppressorTests.cs
index 6b1899f3..0466dd11 100644
--- a/src/nunit.analyzers.tests/DiagnosticSuppressors/DisposableFieldsSuppressorTests.cs
+++ b/src/nunit.analyzers.tests/DiagnosticSuppressors/DisposableFieldsSuppressorTests.cs
@@ -19,9 +19,9 @@ public void OneTimeSetUp()
         {
             // Find the NetAnalyzers assembly (note version should match the one referenced)
             string netAnalyzersPath = Path.Combine(PathHelper.GetNuGetPackageDirectory(),
-                "microsoft.codeanalysis.netanalyzers/7.0.4/analyzers/dotnet/cs/Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll");
+                "microsoft.codeanalysis.netanalyzers/8.0.0/analyzers/dotnet/cs/Microsoft.CodeAnalysis.NetAnalyzers.dll");
             Assembly netAnalyzerAssembly = Assembly.LoadFrom(netAnalyzersPath);
-            Type analyzerType = netAnalyzerAssembly.GetType("Microsoft.CodeQuality.CSharp.Analyzers.ApiDesignGuidelines.CSharpTypesThatOwnDisposableFieldsShouldBeDisposableAnalyzer", true)!;
+            Type analyzerType = netAnalyzerAssembly.GetType("Microsoft.CodeQuality.Analyzers.ApiDesignGuidelines.TypesThatOwnDisposableFieldsShouldBeDisposableAnalyzer", true)!;
             this.analyzer = (DiagnosticAnalyzer)Activator.CreateInstance(analyzerType)!;
 
             this.analyzer = new DefaultEnabledAnalyzer(this.analyzer);
diff --git a/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj b/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj
index 402afc2f..45b5b851 100644
--- a/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj
+++ b/src/nunit.analyzers.tests/nunit.analyzers.tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <RootNamespace>NUnit.Analyzers.Tests</RootNamespace>
-    <TargetFrameworks>net6.0;net462</TargetFrameworks>
+    <TargetFrameworks>net8.0;net462</TargetFrameworks>
     <NUnitVersion Condition="'$(NUnitVersion)'==''">4</NUnitVersion>
   </PropertyGroup>
 
diff --git a/src/nunit.analyzers/ConstraintUsage/EqualConstraintUsageCodeFix.cs b/src/nunit.analyzers/ConstraintUsage/EqualConstraintUsageCodeFix.cs
index cc059520..bd1f3da7 100644
--- a/src/nunit.analyzers/ConstraintUsage/EqualConstraintUsageCodeFix.cs
+++ b/src/nunit.analyzers/ConstraintUsage/EqualConstraintUsageCodeFix.cs
@@ -26,7 +26,7 @@ protected override (ExpressionSyntax? actual, ExpressionSyntax? constraintExpres
             }
             else if (expected is PatternSyntax pattern)
             {
-                constraintExpression = this.ConvertPattern(
+                constraintExpression = ConvertPattern(
                     SyntaxFactory.IdentifierName(NUnitFrameworkConstants.NameOfIs),
                     pattern);
             }
@@ -91,7 +91,7 @@ private static (ExpressionSyntax? actual, ExpressionOrPatternSyntax? expected) G
         ///   supported-pattern or supported-pattern,
         ///   supported-pattern and supported-pattern.
         /// </remarks>
-        private InvocationExpressionSyntax? ConvertPattern(ExpressionSyntax member, PatternSyntax pattern)
+        private static InvocationExpressionSyntax? ConvertPattern(ExpressionSyntax member, PatternSyntax pattern)
         {
             if (pattern is ConstantPatternSyntax constantPattern)
             {
@@ -125,7 +125,7 @@ private static (ExpressionSyntax? actual, ExpressionOrPatternSyntax? expected) G
             }
             else if (pattern is UnaryPatternSyntax unaryPattern && unaryPattern.IsKind(SyntaxKind.NotPattern))
             {
-                return this.ConvertPattern(
+                return ConvertPattern(
                     SyntaxFactory.MemberAccessExpression(
                         SyntaxKind.SimpleMemberAccessExpression,
                         member,
@@ -143,11 +143,11 @@ private static (ExpressionSyntax? actual, ExpressionOrPatternSyntax? expected) G
 
                 if (constraint is not null)
                 {
-                    InvocationExpressionSyntax? leftExpression = this.ConvertPattern(member, binaryPattern.Left);
+                    InvocationExpressionSyntax? leftExpression = ConvertPattern(member, binaryPattern.Left);
 
                     if (leftExpression is not null)
                     {
-                        return this.ConvertPattern(
+                        return ConvertPattern(
                             SyntaxFactory.MemberAccessExpression(
                                 SyntaxKind.SimpleMemberAccessExpression,
                                 leftExpression,