diff --git a/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj b/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj
index 37a1f006..1025d4cf 100644
--- a/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj
+++ b/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-		<TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+		<TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
 		<AssemblyName>LibreMetaverse.LslTools</AssemblyName>
 	    <PackageId>LibreMetaverse.LslTools</PackageId>
 	    <Description>Lexer for LSL scrripting language</Description>
diff --git a/LibreMetaverse.Rendering.Meshmerizer/LibreMetaverse.Rendering.Meshmerizer.csproj b/LibreMetaverse.Rendering.Meshmerizer/LibreMetaverse.Rendering.Meshmerizer.csproj
index b612336b..f8304ac7 100644
--- a/LibreMetaverse.Rendering.Meshmerizer/LibreMetaverse.Rendering.Meshmerizer.csproj
+++ b/LibreMetaverse.Rendering.Meshmerizer/LibreMetaverse.Rendering.Meshmerizer.csproj
@@ -4,7 +4,7 @@
 	<PackageId>LibreMetaverse.Rendering.Meshmerizer</PackageId>
 	<Description>Meshmerizer library for rendering mesh assets in LibreMetaverse</Description>
 	<RootNamespace>LibreMetaverse.Rendering.Meshmerizer</RootNamespace>
-    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
 	<GenerateAssemblyInfo>true</GenerateAssemblyInfo>
 	<IncludeSymbols>true</IncludeSymbols>
diff --git a/LibreMetaverse.Rendering.Simple/LibreMetaverse.Rendering.Simple.csproj b/LibreMetaverse.Rendering.Simple/LibreMetaverse.Rendering.Simple.csproj
index 14ea1f42..ab1bb5cb 100644
--- a/LibreMetaverse.Rendering.Simple/LibreMetaverse.Rendering.Simple.csproj
+++ b/LibreMetaverse.Rendering.Simple/LibreMetaverse.Rendering.Simple.csproj
@@ -3,7 +3,7 @@
     <AssemblyName>LibreMetaverse.Rendering.Simple</AssemblyName>
 	<Description>Simple library for rendering mesh assets in LibreMetaverse</Description>
 	<PackageId>LibreMetaverse.Rendering.Simple</PackageId>
-    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
     <RootNamespace>LibreMetaverse.Rendering.Simple</RootNamespace>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
diff --git a/LibreMetaverse.StructuredData/LibreMetaverse.StructuredData.csproj b/LibreMetaverse.StructuredData/LibreMetaverse.StructuredData.csproj
index dc7864d6..78b11d80 100644
--- a/LibreMetaverse.StructuredData/LibreMetaverse.StructuredData.csproj
+++ b/LibreMetaverse.StructuredData/LibreMetaverse.StructuredData.csproj
@@ -3,7 +3,7 @@
     <AssemblyName>LibreMetaverse.StructuredData</AssemblyName>
 	<Description>LibreMetaverse structured data library</Description>
 	<PackageId>LibreMetaverse.StructuredData</PackageId>
-    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
     <RootNamespace>LibreMetaverse.StructuredData</RootNamespace>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
diff --git a/LibreMetaverse.Types/LibreMetaverse.Types.csproj b/LibreMetaverse.Types/LibreMetaverse.Types.csproj
index c19c23ec..3a716e61 100644
--- a/LibreMetaverse.Types/LibreMetaverse.Types.csproj
+++ b/LibreMetaverse.Types/LibreMetaverse.Types.csproj
@@ -3,7 +3,7 @@
     <AssemblyName>LibreMetaverse.Types</AssemblyName>
 	<PackageId>LibreMetaverse.Types</PackageId>
 	<Description>LibreMetaverse type library</Description>
-    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
     <RootNamespace>LibreMetaverse</RootNamespace>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
diff --git a/LibreMetaverse.Utilities/LibreMetaverse.Utilities.csproj b/LibreMetaverse.Utilities/LibreMetaverse.Utilities.csproj
index ccc75952..afcbf871 100644
--- a/LibreMetaverse.Utilities/LibreMetaverse.Utilities.csproj
+++ b/LibreMetaverse.Utilities/LibreMetaverse.Utilities.csproj
@@ -3,7 +3,7 @@
 	  <AssemblyName>LibreMetaverse.Utilities</AssemblyName>
       <PackageId>LibreMetaverse.Utilities</PackageId>
 	  <Description>LibreMetaverse utility library</Description>
-	  <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+	  <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
 	  <OutputType>Library</OutputType>
 	  <RootNamespace>LibreMetaverse.Utilities</RootNamespace>
 	  <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
diff --git a/LibreMetaverse.Voice/LibreMetaverse.Voice.csproj b/LibreMetaverse.Voice/LibreMetaverse.Voice.csproj
index ad19097d..87c2e877 100644
--- a/LibreMetaverse.Voice/LibreMetaverse.Voice.csproj
+++ b/LibreMetaverse.Voice/LibreMetaverse.Voice.csproj
@@ -5,7 +5,7 @@
 	<Description>Library interface for Vivox voice client</Description>
     <OutputType>Library</OutputType>
     <RootNamespace>LibreMetaverse</RootNamespace>
-    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
 	<IncludeSymbols>true</IncludeSymbols>
 	<SymbolPackageFormat>snupkg</SymbolPackageFormat>
diff --git a/LibreMetaverse/LibreMetaverse.csproj b/LibreMetaverse/LibreMetaverse.csproj
index 87d657ed..6238720b 100644
--- a/LibreMetaverse/LibreMetaverse.csproj
+++ b/LibreMetaverse/LibreMetaverse.csproj
@@ -11,7 +11,7 @@
 	<IncludeSymbols>true</IncludeSymbols>
 	<SymbolPackageFormat>snupkg</SymbolPackageFormat>
     <NoWarn>$(NoWarn);CS8981;CS1591;CS1574</NoWarn>
-    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
     <PlatformTarget>AnyCPU</PlatformTarget>
 	<OutputPath>..\bin\</OutputPath>
   </PropertyGroup>
diff --git a/PrimMesher/LibreMetaverse.PrimMesher.csproj b/PrimMesher/LibreMetaverse.PrimMesher.csproj
index f7a1b68e..9d4851d6 100644
--- a/PrimMesher/LibreMetaverse.PrimMesher.csproj
+++ b/PrimMesher/LibreMetaverse.PrimMesher.csproj
@@ -4,7 +4,7 @@
     <AssemblyName>LibreMetaverse.PrimMesher</AssemblyName>
 	<PackageId>LibreMetaverse.PrimMesher</PackageId>
 	<OutputType>Library</OutputType>
-    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net7.0;net8.0</TargetFrameworks>
     <Authors>Dhalia Trimble, Sjofn LLC, OpenMetaverse Developers</Authors>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
 	<IncludeSymbols>true</IncludeSymbols>
diff --git a/Programs/VoiceTest/VoiceTest.csproj b/Programs/VoiceTest/VoiceTest.csproj
index 23f7b5d6..dfebaa86 100644
--- a/Programs/VoiceTest/VoiceTest.csproj
+++ b/Programs/VoiceTest/VoiceTest.csproj
@@ -4,7 +4,7 @@
 	<OutputType>Exe</OutputType>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
     <OutputPath>..\..\bin\</OutputPath>
-    <TargetFrameworks>net481;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;net7.0;net8.0</TargetFrameworks>
     <PlatformTarget>AnyCPU</PlatformTarget>
 	<IsPackable>false</IsPackable>
   </PropertyGroup>
diff --git a/Programs/examples/TestClient/TestClient.csproj b/Programs/examples/TestClient/TestClient.csproj
index f153532b..941d3b7e 100644
--- a/Programs/examples/TestClient/TestClient.csproj
+++ b/Programs/examples/TestClient/TestClient.csproj
@@ -4,7 +4,7 @@
 	<OutputType>Exe</OutputType>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
     <OutputPath>..\..\..\bin\</OutputPath>
-    <TargetFrameworks>net481;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;net7.0;net8.0</TargetFrameworks>
     <PlatformTarget>AnyCPU</PlatformTarget>
 	<IncludeSymbols>true</IncludeSymbols>
 	<SymbolPackageFormat>snupkg</SymbolPackageFormat>