diff --git a/.github/dependabot.yaml b/.github/dependabot.yaml
index 50e2d31..14f0643 100644
--- a/.github/dependabot.yaml
+++ b/.github/dependabot.yaml
@@ -7,9 +7,9 @@ updates:
   - package-ecosystem: nuget
     directories:
       - "/src/Ulid"
-      - "/src/Dapper.Impl"
-      - "/src/EFCore.Impl"
-      - "/src/LinqToDB.Impl"
+      - "/src/Dapper"
+      - "/src/EFCore"
+      - "/src/LinqToDB"
       - "/src/DB.Shared"
     schedule:
       interval: "weekly"
diff --git a/.github/workflows/build-and-test-aot.yml b/.github/workflows/build-and-test-aot.yml
index eb0e45c..9b2e8a6 100644
--- a/.github/workflows/build-and-test-aot.yml
+++ b/.github/workflows/build-and-test-aot.yml
@@ -31,7 +31,7 @@ jobs:
         dotnet-version: '10.0.x'
 
     - name: Restore dependencies
-      run: dotnet restore src/ByteAether.Ulid.slnx -p:Configuration=CI-Release --use-current-runtime -p:SelfContained=true
+      run: dotnet restore src/Ulid.Tests.AotConsole/Tests.AotConsole.csproj -p:Configuration=CI-Release --use-current-runtime -p:SelfContained=true
 
     - name: Build and Publish AOT Console Application (${{ matrix.os }})
       run: dotnet publish src/Ulid.Tests.AotConsole/Tests.AotConsole.csproj --configuration CI-Release --no-restore --use-current-runtime --self-contained true -o ./publish
diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index ea780bc..8b10e80 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -14,57 +14,77 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
+  build-and-test:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout code
-      uses: actions/checkout@v7
+      - name: Checkout code
+        uses: actions/checkout@v7
 
-    - name: Get Short SHA
-      id: vars
-      run: echo "sha_short=$(echo ${{ github.sha }} | cut -c1-7)" >> $GITHUB_OUTPUT
+      - name: Get Short SHA
+        id: vars
+        run: echo "sha_short=$(echo ${{ github.sha }} | cut -c1-7)" >> $GITHUB_OUTPUT
 
-    - name: Setup .NET
-      uses: actions/setup-dotnet@v6
-      with:
-        dotnet-version: |
-          10.x
-          9.x
-          8.x
-          7.x
-          6.x
-          5.x
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v6
+        with:
+          dotnet-version: 10.x
 
-    - name: Restore dependencies
-      run: dotnet restore src/ByteAether.Ulid.slnx -p:Configuration=CI-Release
+      - name: Restore dependencies
+        run: dotnet restore src/ByteAether.Ulid.slnx -p:Configuration=CI-Debug
 
-    - name: Build
-      run: dotnet build src/ByteAether.Ulid.slnx --configuration CI-Release --no-restore
+      - name: Build
+        run: dotnet build src/ByteAether.Ulid.slnx --configuration CI-Debug --no-restore
 
-    - name: Upload DLLs
-      uses: actions/upload-artifact@v7
-      with:
-        name: dlls-${{ steps.vars.outputs.sha_short }}
-        path: | 
-          ./**/Ulid/bin/**/*.dll
-          ./**/EFCore.Impl/bin/**/*.dll
+      - name: Upload DLLs
+        uses: actions/upload-artifact@v7
+        with:
+          name: dlls-${{ steps.vars.outputs.sha_short }}
+          path: |
+            ./**/Ulid/bin/**/*.dll
+            ./**/EFCore/bin/**/*.dll
+            ./**/LinqToDB/bin/**/*.dll
+            ./**/Dapper/bin/**/*.dll
 
-    - name: Run tests
-      continue-on-error: true
-      run: dotnet test src/ByteAether.Ulid.slnx --configuration CI-Release --no-build --verbosity normal --logger "trx"
+      - name: Run framework tests
+        run: |
+          frameworks=(
+            "net10.0"
+            "net9.0"
+            "net8.0"
+            "net7.0"
+            "net6.0"
+            "net5.0"
+            "netstandard2.1"
+            "netstandard2.0"
+          )
+          
+          failed=0
+          for tfm in "${frameworks[@]}"; do
+            echo "::group::Testing $tfm"
+            if ! dotnet test src/ByteAether.Ulid.slnx --configuration CI-Debug -p:ImplTargetFramework=$tfm --verbosity normal --logger "trx;LogFileName=results-$tfm.trx"; then
+              echo "❌ Tests failed for $tfm"
+              failed=1
+            fi
+            echo "::endgroup::"
+          done
+          
+          if [ $failed -eq 1 ]; then
+            echo "One or more target framework tests failed."
+            exit 1
+          fi
 
-    - name: Upload test results
-      uses: actions/upload-artifact@v7
-      with:
-        name: test-results-${{ steps.vars.outputs.sha_short }}
-        path: ./**/TestResults/**/*.trx
+      - name: Upload test results
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-results-${{ steps.vars.outputs.sha_short }}
+          path: ./**/TestResults/**/*.trx
 
-    - name: Pack
-      run: dotnet pack src/ByteAether.Ulid.slnx --configuration CI-Release -p:ContinuousIntegrationBuild=true -p:PackageVersion=0.0.0-ci-${{ steps.vars.outputs.sha_short }} -p:PackageReleaseNotes="CI Build ${{ steps.vars.outputs.sha_short }}" --output ./output
+      - name: Pack
+        run: dotnet pack src/ByteAether.Ulid.slnx --configuration CI-Debug -p:ContinuousIntegrationBuild=true -p:PackageVersion=0.0.0-ci-${{ steps.vars.outputs.sha_short }} -p:PackageReleaseNotes="CI Build ${{ steps.vars.outputs.sha_short }}" --output ./output
 
-    - name: Upload NuGet package
-      uses: actions/upload-artifact@v7
-      with:
-        name: nugets-${{ steps.vars.outputs.sha_short }}
-        path: ./output/*.nupkg
+      - name: Upload NuGet package
+        uses: actions/upload-artifact@v7
+        with:
+          name: nugets-${{ steps.vars.outputs.sha_short }}
+          path: ./output/*.nupkg
diff --git a/README.md b/README.md
index 507891d..04c07d1 100644
--- a/README.md
+++ b/README.md
@@ -53,11 +53,11 @@ This library explicitly **multi-targets** each runtime version listed below, ena
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 9.0](https://img.shields.io/badge/.NET-9.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET 7.0](https://img.shields.io/badge/.NET-7.0-green)
-![.NET 6.0](https://img.shields.io/badge/.NET-6.0-green)
-![.NET 5.0](https://img.shields.io/badge/.NET-5.0-yellow)
-![.NET Standard 2.1](https://img.shields.io/badge/.NET-Standard_2.1-yellow)
-![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-green)
+![.NET 7.0](https://img.shields.io/badge/.NET-7.0-brightgreen)
+![.NET 6.0](https://img.shields.io/badge/.NET-6.0-brightgreen)
+![.NET 5.0](https://img.shields.io/badge/.NET-5.0-brightgreen)
+![.NET Standard 2.1](https://img.shields.io/badge/.NET-Standard_2.1-brightgreen)
+![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-brightgreen)
 
 - **Universally Unique**: Ensures global uniqueness across systems.
 - **Sortable**: Lexicographically ordered for time-based sorting.
@@ -321,8 +321,8 @@ Includes a `JsonConverter` for easy serialization and deserialization.
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 9.0](https://img.shields.io/badge/.NET-9.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET 7.0](https://img.shields.io/badge/.NET-7.0-green)
-![.NET 6.0](https://img.shields.io/badge/.NET-6.0-green)
+![.NET 7.0](https://img.shields.io/badge/.NET-7.0-brightgreen)
+![.NET 6.0](https://img.shields.io/badge/.NET-6.0-brightgreen)
 
 To seamlessly use ULIDs with [Entity Framework Core](https://github.com/dotnet/efcore), install the specialized extension package:
 
@@ -387,7 +387,7 @@ More details in the package's [PACKAGE.md](./src/EFCore/PACKAGE.md) file.
 ![.NET AOT Ready](https://img.shields.io/badge/.NET-AOT_Ready-blue)
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-green)
+![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-brightgreen)
 
 To integrate with [LinqToDB](https://github.com/linq2db/linq2db), install the specialized extension package:
 
@@ -423,7 +423,7 @@ More details in the package's [PACKAGE.md](./src/LinqToDB/PACKAGE.md) file.
 ![.NET AOT Ready](https://img.shields.io/badge/.NET-AOT_Ready-blue)
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-green)
+![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-brightgreen)
 
 To integrate with [Dapper](https://github.com/DapperLib/Dapper), install the specialized extension package:
 
diff --git a/src/ByteAether.Ulid.slnx b/src/ByteAether.Ulid.slnx
index 60758b9..5491095 100644
--- a/src/ByteAether.Ulid.slnx
+++ b/src/ByteAether.Ulid.slnx
@@ -8,8 +8,12 @@
 
   <Folder Name="/Ulid/">
     <Project Path="Ulid/Impl.csproj" />
-    <Project Path="Ulid.Tests/Tests.csproj" />
-    <Project Path="Ulid.Tests.AotConsole/Tests.AotConsole.csproj" />
+    <Project Path="Ulid.Tests/Tests.csproj">
+      <Build Solution="CI-Release|*" Project="false" />
+    </Project>
+    <Project Path="Ulid.Tests.AotConsole/Tests.AotConsole.csproj">
+      <Build Solution="CI-Release|*" Project="false" />
+    </Project>
     <Project Path="Ulid.Benchmarks/Benchmarks.csproj">
       <Build Solution="CI-Debug|*" Project="false" />
       <Build Solution="CI-Release|*" Project="false" />
@@ -18,24 +22,33 @@
 
   <Folder Name="/DB/">
     <Project Path="DB.Shared/DB.Shared.csproj" />
-    <Project Path="DB.Shared.Tests/DB.Shared.Tests.csproj" />
+    <Project Path="DB.Shared.Tests/DB.Shared.Tests.csproj">
+      <Build Solution="CI-Release|*" Project="false" />
+    </Project>
   </Folder>
   <Folder Name="/DB/EFCore/">
     <Project Path="EFCore/EFCore.Impl.csproj" />
-    <Project Path="EFCore.IntegrationTests/EFCore.IntegrationTests.csproj" />
+    <Project Path="EFCore.IntegrationTests/EFCore.IntegrationTests.csproj">
+      <Build Solution="CI-Release|*" Project="false" />
+    </Project>
   </Folder>
   <Folder Name="/DB/LinqToDB/">
     <Project Path="LinqToDB\LinqToDB.Impl.csproj" />
-    <Project Path="LinqToDB.IntegrationTests\LinqToDB.IntegrationTests.csproj" />
+    <Project Path="LinqToDB.IntegrationTests\LinqToDB.IntegrationTests.csproj">
+      <Build Solution="CI-Release|*" Project="false" />
+    </Project>
   </Folder>
   <Folder Name="/DB/Dapper/">
     <Project Path="Dapper/Dapper.Impl.csproj" />
-    <Project Path="Dapper.IntegrationTests/Dapper.IntegrationTests.csproj" />
+    <Project Path="Dapper.IntegrationTests/Dapper.IntegrationTests.csproj">
+      <Build Solution="CI-Release|*" Project="false" />
+    </Project>
   </Folder>
 
   <Folder Name="/Solution Items/">
     <File Path="../README.md" />
     <File Path="Directory.Build.props" />
+    <File Path="Directory.Build.targets" />
     <File Path=".editorconfig" />
     <File Path=".runsettings" />
   </Folder>
diff --git a/src/DB.Shared.Tests/DB.Shared.Tests.csproj b/src/DB.Shared.Tests/DB.Shared.Tests.csproj
index 04bc9b4..030a53a 100644
--- a/src/DB.Shared.Tests/DB.Shared.Tests.csproj
+++ b/src/DB.Shared.Tests/DB.Shared.Tests.csproj
@@ -2,7 +2,9 @@
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
-    <IsTestProject>true</IsTestProject>
+    <SupportedImplFrameworks>net10.0;net8.0;net6.0;netstandard2.0</SupportedImplFrameworks>
+
+    <IsTestProject Condition="$(SupportedImplFrameworks.Contains('$(ImplTargetFramework)'))">true</IsTestProject>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
 
     <UseDataCollector/>
@@ -11,8 +13,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\DB.Shared\DB.Shared.csproj" />
-    <ProjectReference Include="..\Ulid\Impl.csproj" />
+    <ProjectReference Include="..\DB.Shared\DB.Shared.csproj" SetTargetFramework="TargetFramework=$(ImplTargetFramework)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/DB.Shared/DB.Shared.csproj b/src/DB.Shared/DB.Shared.csproj
index c70a182..91ba7c7 100644
--- a/src/DB.Shared/DB.Shared.csproj
+++ b/src/DB.Shared/DB.Shared.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net6.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net10.0;net8.0;net6.0;netstandard2.0</TargetFrameworks>
     <OutputType>library</OutputType>
-    <IsAotCompatible>true</IsAotCompatible>
+    <IsAotCompatible Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))">true</IsAotCompatible>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
 
     <RootNamespace>ByteAether.Ulid.DB.Shared</RootNamespace>
diff --git a/src/Dapper.IntegrationTests/Dapper.IntegrationTests.csproj b/src/Dapper.IntegrationTests/Dapper.IntegrationTests.csproj
index 2654b2a..90dbf5f 100644
--- a/src/Dapper.IntegrationTests/Dapper.IntegrationTests.csproj
+++ b/src/Dapper.IntegrationTests/Dapper.IntegrationTests.csproj
@@ -1,8 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net10.0;net8.0;net7.0</TargetFrameworks>
-    <IsTestProject>true</IsTestProject>
+    <TargetFramework>net10.0</TargetFramework>
+    <SupportedImplFrameworks>net10.0;net8.0;netstandard2.0</SupportedImplFrameworks>
+
+    <IsTestProject Condition="$(SupportedImplFrameworks.Contains('$(ImplTargetFramework)'))">true</IsTestProject>
     <NoWarn>NU1903</NoWarn>
 
     <RootNamespace>ByteAether.Ulid.Dapper.IntegrationTests</RootNamespace>
@@ -13,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\Dapper\Dapper.Impl.csproj" />
+    <ProjectReference Include="..\Dapper\Dapper.Impl.csproj" SetTargetFramework="TargetFramework=$(ImplTargetFramework)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Dapper/PACKAGE.md b/src/Dapper/PACKAGE.md
index b68027c..6683f49 100644
--- a/src/Dapper/PACKAGE.md
+++ b/src/Dapper/PACKAGE.md
@@ -14,7 +14,7 @@ For the core library and full details, visit our [GitHub repository](https://git
 ![.NET AOT Ready](https://img.shields.io/badge/.NET-AOT_Ready-blue)
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-green)
+![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-brightgreen)
 
 - **Version Support**: Fully compatible with **[Dapper](https://github.com/DapperLib/Dapper) versions 2.0.0 and newer**.
 - **Automated Configuration**: Register mappings globally across your entire application runtime using a single configuration call.
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index c618f25..00e8893 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -25,6 +25,8 @@
 
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
 
+    <!-- Default to net10.0 if not specified via CLI -->
+    <ImplTargetFramework Condition="'$(ImplTargetFramework)' == ''">net10.0</ImplTargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)' == 'CI-Release'"><Optimize>true</Optimize>
@@ -48,14 +50,8 @@
   </ItemGroup>
 
   <ItemGroup Condition="$(IsTestProject) == 'true'">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" Condition="'$(TargetFramework)' == 'net6.0' Or '$(TargetFramework)' == 'net7.0'"/>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" Condition="'$(TargetFramework)' != 'net6.0' And '$(TargetFramework)' != 'net7.0'"/>
-
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.2" Condition="'$(TargetFramework)' == 'net6.0' Or '$(TargetFramework)' == 'net7.0'">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" Condition="'$(TargetFramework)' != 'net6.0' And '$(TargetFramework)' != 'net7.0'">
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/src/Directory.Build.targets b/src/Directory.Build.targets
new file mode 100644
index 0000000..831c72e
--- /dev/null
+++ b/src/Directory.Build.targets
@@ -0,0 +1,22 @@
+<Project>
+  <PropertyGroup Condition="'$(IsTestProject)' == 'true' And '$(ImplTargetFramework)' != ''">
+    <!-- 1. Stop .NET SDK from automatically adding default net10.0 symbols -->
+    <DisableImplicitFrameworkDefines>true</DisableImplicitFrameworkDefines>
+
+    <!-- 2. NETCOREAPP (defined only for non-netstandard / non-net4x) -->
+    <DefineConstants Condition="!$(ImplTargetFramework.StartsWith('netstandard')) And !$(ImplTargetFramework.StartsWith('net4'))">$(DefineConstants);NETCOREAPP</DefineConstants>
+
+    <!-- 3. NETSTANDARD -->
+    <DefineConstants Condition="$(ImplTargetFramework.StartsWith('netstandard'))">$(DefineConstants);NETSTANDARD</DefineConstants>
+    <DefineConstants Condition="'$(ImplTargetFramework)' == 'netstandard2.0'">$(DefineConstants);NETSTANDARD2_0;NETSTANDARD2_0_OR_GREATER</DefineConstants>
+    <DefineConstants Condition="'$(ImplTargetFramework)' == 'netstandard2.1'">$(DefineConstants);NETSTANDARD2_0_OR_GREATER;NETSTANDARD2_1;NETSTANDARD2_1_OR_GREATER</DefineConstants>
+
+    <!-- 4. Version-specific compatibility constants -->
+    <DefineConstants Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(ImplTargetFramework)', 'net5.0'))">$(DefineConstants);NET5_0;NET5_0_OR_GREATER</DefineConstants>
+    <DefineConstants Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(ImplTargetFramework)', 'net6.0'))">$(DefineConstants);NET6_0;NET6_0_OR_GREATER</DefineConstants>
+    <DefineConstants Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(ImplTargetFramework)', 'net7.0'))">$(DefineConstants);NET7_0;NET7_0_OR_GREATER</DefineConstants>
+    <DefineConstants Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(ImplTargetFramework)', 'net8.0'))">$(DefineConstants);NET8_0;NET8_0_OR_GREATER</DefineConstants>
+    <DefineConstants Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(ImplTargetFramework)', 'net9.0'))">$(DefineConstants);NET9_0;NET9_0_OR_GREATER</DefineConstants>
+    <DefineConstants Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(ImplTargetFramework)', 'net10.0'))">$(DefineConstants);NET10_0;NET10_0_OR_GREATER</DefineConstants>
+  </PropertyGroup>
+</Project>
diff --git a/src/EFCore.IntegrationTests/EFCore.IntegrationTests.csproj b/src/EFCore.IntegrationTests/EFCore.IntegrationTests.csproj
index 2868a56..7e87269 100644
--- a/src/EFCore.IntegrationTests/EFCore.IntegrationTests.csproj
+++ b/src/EFCore.IntegrationTests/EFCore.IntegrationTests.csproj
@@ -1,8 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net10.0;net9.0;net8.0;net7.0;net6.0</TargetFrameworks>
-    <IsTestProject>true</IsTestProject>
+    <TargetFramework>net10.0</TargetFramework>
+    <SupportedImplFrameworks>net10.0;net9.0;net8.0;net7.0;net6.0</SupportedImplFrameworks>
+
+    <IsTestProject Condition="$(SupportedImplFrameworks.Contains('$(ImplTargetFramework)'))">true</IsTestProject>
     <NoWarn>NU1903</NoWarn>
 
     <RootNamespace>ByteAether.Ulid.EntityFrameworkCore.IntegrationTests</RootNamespace>
@@ -17,7 +19,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\EFCore\EFCore.Impl.csproj" />
+    <ProjectReference Include="..\EFCore\EFCore.Impl.csproj" SetTargetFramework="TargetFramework=$(ImplTargetFramework)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/EFCore/PACKAGE.md b/src/EFCore/PACKAGE.md
index 1d6655a..d827395 100644
--- a/src/EFCore/PACKAGE.md
+++ b/src/EFCore/PACKAGE.md
@@ -15,8 +15,8 @@ For the core library and full details, visit our [GitHub repository](https://git
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 9.0](https://img.shields.io/badge/.NET-9.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET 7.0](https://img.shields.io/badge/.NET-7.0-green)
-![.NET 6.0](https://img.shields.io/badge/.NET-6.0-green)
+![.NET 7.0](https://img.shields.io/badge/.NET-7.0-brightgreen)
+![.NET 6.0](https://img.shields.io/badge/.NET-6.0-brightgreen)
 
 - **Version Support**: Fully compatible with **[Entity Framework Core](https://github.com/dotnet/efcore) versions 6.0.0 and newer**.
 - **Automated Configuration**: Register mappings globally for both nullable and non-nullable `Ulid` types using a single extension method.
diff --git a/src/LinqToDB.IntegrationTests/LinqToDB.IntegrationTests.csproj b/src/LinqToDB.IntegrationTests/LinqToDB.IntegrationTests.csproj
index 9fbbd9f..0666659 100644
--- a/src/LinqToDB.IntegrationTests/LinqToDB.IntegrationTests.csproj
+++ b/src/LinqToDB.IntegrationTests/LinqToDB.IntegrationTests.csproj
@@ -1,8 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net10.0;net8.0;net7.0</TargetFrameworks>
-    <IsTestProject>true</IsTestProject>
+    <TargetFramework>net10.0</TargetFramework>
+    <SupportedImplFrameworks>net10.0;net8.0;netstandard2.0</SupportedImplFrameworks>
+
+    <IsTestProject Condition="$(SupportedImplFrameworks.Contains('$(ImplTargetFramework)'))">true</IsTestProject>
     <NoWarn>NU1903</NoWarn>
 
     <RootNamespace>ByteAether.Ulid.LinqToDB.IntegrationTests</RootNamespace>
@@ -14,7 +16,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\LinqToDB\LinqToDB.Impl.csproj" />
+    <ProjectReference Include="..\LinqToDB\LinqToDB.Impl.csproj" SetTargetFramework="TargetFramework=$(ImplTargetFramework)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/LinqToDB/PACKAGE.md b/src/LinqToDB/PACKAGE.md
index bb612b8..a8eeab2 100644
--- a/src/LinqToDB/PACKAGE.md
+++ b/src/LinqToDB/PACKAGE.md
@@ -14,7 +14,7 @@ For the core library and full details, visit our [GitHub repository](https://git
 ![.NET AOT Ready](https://img.shields.io/badge/.NET-AOT_Ready-blue)
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-green)
+![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-brightgreen)
 
 - **Version Support**: Fully compatible with **[LinqToDB](https://github.com/linq2db/linq2db) versions 6.0.0 and newer**.
 - **Automated Configuration**: Register mappings globally for both nullable and non-nullable `Ulid` types using a single extension method on your `DataOptions`.
diff --git a/src/Ulid.Tests/Tests.csproj b/src/Ulid.Tests/Tests.csproj
index 6e9d5c0..a9feaca 100644
--- a/src/Ulid.Tests/Tests.csproj
+++ b/src/Ulid.Tests/Tests.csproj
@@ -1,7 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <IsTestProject>true</IsTestProject>
+    <TargetFramework>net10.0</TargetFramework>
+    <SupportedImplFrameworks>net10.0;net9.0;net8.0;net7.0;net6.0;net5.0;netstandard2.1;netstandard2.0</SupportedImplFrameworks>
+
+    <IsTestProject Condition="$(SupportedImplFrameworks.Contains('$(ImplTargetFramework)'))">true</IsTestProject>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
 
     <UseDataCollector/>
@@ -9,20 +12,11 @@
     <RootNamespace>ByteAether.Ulid.Tests</RootNamespace>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(OS)' != 'Windows_NT'">
-    <TargetFrameworks>net10.0;net9.0;net8.0;net7.0;net6.0</TargetFrameworks>
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
-    <TargetFrameworks>net10.0;net9.0;net8.0;net7.0;net6.0;net472</TargetFrameworks>
-  </PropertyGroup>
-
   <ItemGroup>
     <PackageReference Include="Xunit.Combinatorial" Version="1.6.24" />
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\Ulid\Impl.csproj" />
+    <ProjectReference Include="..\Ulid\Impl.csproj" SetTargetFramework="TargetFramework=$(ImplTargetFramework)" />
   </ItemGroup>
-
 </Project>
diff --git a/src/Ulid.Tests/UlidJsonConverterTests.cs b/src/Ulid.Tests/UlidJsonConverterTests.cs
index f5d5f56..49be272 100644
--- a/src/Ulid.Tests/UlidJsonConverterTests.cs
+++ b/src/Ulid.Tests/UlidJsonConverterTests.cs
@@ -97,6 +97,7 @@ public void Deserialize_GoodJsonToDto(bool useCustomOptions)
 		Assert.Equal(ulid, resultDto.UlidProperty);
 	}
 
+#if NET6_0_OR_GREATER
 	[Theory]
 	[InlineData(true)]
 	[InlineData(false)]
@@ -135,5 +136,6 @@ public void Deserialize_UlidAsPropertyName(bool useCustomOptions)
 		Assert.True(deserializedDictionary.ContainsKey(ulid));
 		Assert.Equal("value", deserializedDictionary[ulid]);
 	}
-}
 #endif
+}
+#endif
\ No newline at end of file
diff --git a/src/Ulid/PACKAGE.md b/src/Ulid/PACKAGE.md
index 9c788f7..d98a3e3 100644
--- a/src/Ulid/PACKAGE.md
+++ b/src/Ulid/PACKAGE.md
@@ -15,11 +15,11 @@ For more detailed documentation, visit our [GitHub repository](https://github.co
 ![.NET 10.0](https://img.shields.io/badge/.NET-10.0-brightgreen)
 ![.NET 9.0](https://img.shields.io/badge/.NET-9.0-brightgreen)
 ![.NET 8.0](https://img.shields.io/badge/.NET-8.0-brightgreen)
-![.NET 7.0](https://img.shields.io/badge/.NET-7.0-green)
-![.NET 6.0](https://img.shields.io/badge/.NET-6.0-green)
-![.NET 5.0](https://img.shields.io/badge/.NET-5.0-yellow)
-![.NET Standard 2.1](https://img.shields.io/badge/.NET-Standard_2.1-yellow)
-![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-green)
+![.NET 7.0](https://img.shields.io/badge/.NET-7.0-brightgreen)
+![.NET 6.0](https://img.shields.io/badge/.NET-6.0-brightgreen)
+![.NET 5.0](https://img.shields.io/badge/.NET-5.0-brightgreen)
+![.NET Standard 2.1](https://img.shields.io/badge/.NET-Standard_2.1-brightgreen)
+![.NET Standard 2.0](https://img.shields.io/badge/.NET-Standard_2.0-brightgreen)
 
 - **Universally Unique**: Ensures global uniqueness across systems.
 - **Sortable**: Lexicographically ordered for time-based sorting.