diff --git a/X10D.Hosting/X10D.Hosting.csproj b/X10D.Hosting/X10D.Hosting.csproj
index a534fa0..1f8653f 100644
--- a/X10D.Hosting/X10D.Hosting.csproj
+++ b/X10D.Hosting/X10D.Hosting.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net7.0;net6.0;netstandard2.1</TargetFrameworks>
+        <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/X10D.Tests/X10D.Tests.csproj b/X10D.Tests/X10D.Tests.csproj
index 39ddbe7..37b9750 100644
--- a/X10D.Tests/X10D.Tests.csproj
+++ b/X10D.Tests/X10D.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net7.0;net6.0;netcoreapp3.1</TargetFrameworks>
+        <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <IsTestProject>true</IsTestProject>
         <CoverletOutputFormat>json,cobertura</CoverletOutputFormat>
diff --git a/X10D/X10D.csproj b/X10D/X10D.csproj
index 7994902..91d7e99 100644
--- a/X10D/X10D.csproj
+++ b/X10D/X10D.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net7.0;net6.0;netstandard2.1</TargetFrameworks>
+        <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
     </PropertyGroup>
 
     <ItemGroup>