diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2ce9576b96..794d6e1353 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: windows-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Install SQL Local DB
diff --git a/.github/workflows/lock.yml b/.github/workflows/lock.yml
index ad2421a611..a76371b638 100644
--- a/.github/workflows/lock.yml
+++ b/.github/workflows/lock.yml
@@ -14,7 +14,7 @@ jobs:
       pull-requests: write  # for dessant/lock-threads to lock PRs
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v2
+      - uses: dessant/lock-threads@v5
         with:
           github-token: ${{ github.token }}
           issue-lock-inactive-days: 31
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1820dee63b..7cec7204a3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: windows-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Install SQL Local DB
diff --git a/src/AutoMapper.DI.Tests/AutoMapper.DI.Tests.csproj b/src/AutoMapper.DI.Tests/AutoMapper.DI.Tests.csproj
index 6bcbcec357..8f4bcbe920 100644
--- a/src/AutoMapper.DI.Tests/AutoMapper.DI.Tests.csproj
+++ b/src/AutoMapper.DI.Tests/AutoMapper.DI.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <PreserveCompilationContext>true</PreserveCompilationContext>
     <AssemblyName>AutoMapper.Extensions.Microsoft.DependencyInjection.Tests</AssemblyName>
     <PackageId>AutoMapper.Extensions.Microsoft.DependencyInjection.Tests</PackageId>
@@ -16,11 +16,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.4" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="All" />
     <PackageReference Include="Shouldly" Version="4.2.1" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0" />
-    <PackageReference Include="xunit" Version="2.6.2" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
   </ItemGroup>
 
 </Project>
diff --git a/src/AutoMapper/ApiCompat/PreBuild.ps1 b/src/AutoMapper/ApiCompat/PreBuild.ps1
index 6bc6b2dbe9..0e6824f4ea 100644
--- a/src/AutoMapper/ApiCompat/PreBuild.ps1
+++ b/src/AutoMapper/ApiCompat/PreBuild.ps1
@@ -10,4 +10,4 @@ if($versionNumbers[1] -eq "0" -AND $versionNumbers[2] -eq "0")
 $oldVersion = $oldVersion.ToString() +".0.0"
 echo $oldVersion
 & ..\..\nuget install AutoMapper -Version $oldVersion -OutputDirectory ..\LastMajorVersionBinary
-& copy ..\LastMajorVersionBinary\AutoMapper.$oldVersion\lib\net6.0\AutoMapper.dll ..\LastMajorVersionBinary
+& copy ..\LastMajorVersionBinary\AutoMapper.$oldVersion\lib\net*.0\AutoMapper.dll ..\LastMajorVersionBinary
diff --git a/src/AutoMapper/AutoMapper.csproj b/src/AutoMapper/AutoMapper.csproj
index 0757bf73ed..adb0aeb4ab 100644
--- a/src/AutoMapper/AutoMapper.csproj
+++ b/src/AutoMapper/AutoMapper.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <Summary>A convention-based object-object mapper.</Summary>
     <Description>A convention-based object-object mapper.</Description>
-    <TargetFrameworks>net8.0</TargetFrameworks>
+    <TargetFramework>net8.0</TargetFramework>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <AssemblyName>AutoMapper</AssemblyName>
     <AssemblyOriginatorKeyFile>..\..\AutoMapper.snk</AssemblyOriginatorKeyFile>
@@ -39,7 +39,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Options" Version="8.0.0" />
-    <PackageReference Include="MinVer" Version="4.3.0" PrivateAssets="All" />
+    <PackageReference Include="MinVer" Version="6.0.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.DotNet.ApiCompat" Version="7.0.0-beta.22074.1" PrivateAssets="All" />  
   </ItemGroup>
diff --git a/src/AutoMapper/Internal/ReflectionHelper.cs b/src/AutoMapper/Internal/ReflectionHelper.cs
index 7d788f0db2..48d0c45877 100644
--- a/src/AutoMapper/Internal/ReflectionHelper.cs
+++ b/src/AutoMapper/Internal/ReflectionHelper.cs
@@ -88,7 +88,7 @@ public static MemberInfo FindProperty(LambdaExpression lambdaExpression)
         {
             switch (expressionToCheck)
             {
-                case MemberExpression { Member: var member, Expression: { NodeType: ExpressionType.Parameter or ExpressionType.Convert } }:
+                case MemberExpression { Member: var member, Expression.NodeType: ExpressionType.Parameter or ExpressionType.Convert }:
                     return member;
                 case UnaryExpression { Operand: var operand }:
                     expressionToCheck = operand;
diff --git a/src/Benchmark/Benchmark.csproj b/src/Benchmark/Benchmark.csproj
index 15056f7dcd..338eb6067b 100644
--- a/src/Benchmark/Benchmark.csproj
+++ b/src/Benchmark/Benchmark.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <OutputType>Exe</OutputType>
   </PropertyGroup>
 
diff --git a/src/IntegrationTests/AutoMapper.IntegrationTests.csproj b/src/IntegrationTests/AutoMapper.IntegrationTests.csproj
index 5c170ccb7f..910df81488 100644
--- a/src/IntegrationTests/AutoMapper.IntegrationTests.csproj
+++ b/src/IntegrationTests/AutoMapper.IntegrationTests.csproj
@@ -1,18 +1,18 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <NoWarn>$(NoWarn);618</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>
     <Compile Include="..\UnitTests\AutoMapperSpecBase.cs" Link="AutoMapperSpecBase.cs" />
     <ProjectReference Include="..\AutoMapper\AutoMapper.csproj" />
-    <PackageReference Include="xunit" Version="2.6.2" />
+    <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="Shouldly" Version="4.2.1" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.4" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="9.0.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
   </ItemGroup>
   <ItemGroup>
     <Using Include="Xunit" />
diff --git a/src/TestApp/TestApp.csproj b/src/TestApp/TestApp.csproj
index 1aa0ba2168..43d1d11683 100644
--- a/src/TestApp/TestApp.csproj
+++ b/src/TestApp/TestApp.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <AssemblyName>TestApp</AssemblyName>
     <OutputType>Exe</OutputType>
     <ImplicitUsings>enable</ImplicitUsings>
@@ -13,7 +13,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
     <ProjectReference Include="..\AutoMapper\AutoMapper.csproj" />
   </ItemGroup>
 
diff --git a/src/UnitTests/AutoMapper.UnitTests.csproj b/src/UnitTests/AutoMapper.UnitTests.csproj
index c0a536086c..8c96508838 100644
--- a/src/UnitTests/AutoMapper.UnitTests.csproj
+++ b/src/UnitTests/AutoMapper.UnitTests.csproj
@@ -1,16 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <NoWarn>$(NoWarn);649;618</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\AutoMapper\AutoMapper.csproj" />
     <PackageReference Include="Shouldly" Version="4.2.1" />
-    <PackageReference Include="xunit" Version="2.6.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.4" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
   </ItemGroup>
   <ItemGroup>
     <Using Include="Xunit" />