diff --git a/src/UriBuilder.Fluent.UnitTests/UriBuilder.Fluent.UnitTests.csproj b/src/UriBuilder.Fluent.UnitTests/UriBuilder.Fluent.UnitTests.csproj
index 171cb50..5c3ff37 100644
--- a/src/UriBuilder.Fluent.UnitTests/UriBuilder.Fluent.UnitTests.csproj
+++ b/src/UriBuilder.Fluent.UnitTests/UriBuilder.Fluent.UnitTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-	<TargetFrameworks>net480;net60;net70</TargetFrameworks>
+	<TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
diff --git a/src/UriBuilder.Fluent/TerribleDevUriExtensions_NetCore.cs b/src/UriBuilder.Fluent/TerribleDevUriExtensions_NetCore.cs
index 84a8142..04e746b 100644
--- a/src/UriBuilder.Fluent/TerribleDevUriExtensions_NetCore.cs
+++ b/src/UriBuilder.Fluent/TerribleDevUriExtensions_NetCore.cs
@@ -1,4 +1,4 @@
-#if NET6_0_OR_GREATER
+#if NETSTANDARD2_1_OR_GREATER
 
 using System;
 using System.Collections.Generic;
diff --git a/src/UriBuilder.Fluent/UriBuilder.Fluent.csproj b/src/UriBuilder.Fluent/UriBuilder.Fluent.csproj
index 3d1a665..95cbbde 100644
--- a/src/UriBuilder.Fluent/UriBuilder.Fluent.csproj
+++ b/src/UriBuilder.Fluent/UriBuilder.Fluent.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Authors>Tommy Parnell</Authors>
-    <TargetFrameworks>net480;net60;net70</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
     <AssemblyName>UriBuilder.Fluent</AssemblyName>
     <PackageId>UriBuilder.Fluent</PackageId>
     <PackageTags>Url building;Uri;Uri building;fluent;extension</PackageTags>