diff --git a/src/CycloneDX.Core/CycloneDX.Core.csproj b/src/CycloneDX.Core/CycloneDX.Core.csproj
index 2d4bc3f2..3bde161b 100644
--- a/src/CycloneDX.Core/CycloneDX.Core.csproj
+++ b/src/CycloneDX.Core/CycloneDX.Core.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0;net5.0</TargetFramework>
+    <TargetFrameworks>netstandard2.0;net5.0</TargetFrameworks>
     <Product>CycloneDX.Core</Product>
     <Description>A .NET Standard library for CycloneDX bill-of-material documents.</Description>
     <PackageId>CycloneDX.Core</PackageId>
@@ -17,6 +17,7 @@
     <PackageReference Include="protobuf-net.BuildTools" Version="3.2.12" PrivateAssets="all" IncludeAssets="runtime;build;native;contentfiles;analyzers;buildtransitive" />
   </ItemGroup>
 
+    <!--The below packages are natively provided by the framework hence are not need for the frameworks which they are included in. What is included can be checked via https://apisof.net/-->
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="System.Text.Json" Version="7.0.2" />
   </ItemGroup>
diff --git a/src/CycloneDX.Spdx/CycloneDX.Spdx.csproj b/src/CycloneDX.Spdx/CycloneDX.Spdx.csproj
index e5ecdacc..2d12f1d0 100644
--- a/src/CycloneDX.Spdx/CycloneDX.Spdx.csproj
+++ b/src/CycloneDX.Spdx/CycloneDX.Spdx.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFrameworks>netstandard2.0;net5.0</TargetFrameworks>
     <Product>CycloneDX.Spdx</Product>
     <Description>A .NET Standard library for SPDX documents.</Description>
     <PackageId>CycloneDX.Spdx</PackageId>
@@ -13,6 +13,10 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="JsonSchema.Net" Version="3.3.2" />
+  </ItemGroup>
+
+  <!--The below packages are natively provided by the framework hence are not need for the frameworks which they are included in. What is included can be checked via https://apisof.net/-->
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="System.Text.Json" Version="7.0.2" />
   </ItemGroup>