diff --git a/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj b/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj
index c406e55a..09a41b36 100644
--- a/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj
+++ b/LibreMetaverse.LslTools/LibreMetaverse.LslTools.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-		<TargetFrameworks>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+		<TargetFrameworks>net481;netstandard2.1;net6.0;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 84e36298..c0e8f6cf 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>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;netstandard2.1;net6.0;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 067def1d..6d6b8207 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>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;netstandard2.1;net6.0;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 4ddd38a6..808e9b29 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>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
     <RootNamespace>LibreMetaverse.StructuredData</RootNamespace>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
diff --git a/LibreMetaverse.Tests/LibreMetaverse.Tests.csproj b/LibreMetaverse.Tests/LibreMetaverse.Tests.csproj
index 44051d87..c1ecd906 100644
--- a/LibreMetaverse.Tests/LibreMetaverse.Tests.csproj
+++ b/LibreMetaverse.Tests/LibreMetaverse.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyName>LibreMetaverse.Tests</AssemblyName>
-    <TargetFrameworks>net48;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;net6.0;net7.0;net8.0</TargetFrameworks>
     <OutputType>Library</OutputType>
     <RootNamespace>LibreMetaverse.Tests</RootNamespace>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
diff --git a/LibreMetaverse.Types/LibreMetaverse.Types.csproj b/LibreMetaverse.Types/LibreMetaverse.Types.csproj
index ed35c801..53049b50 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>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;netstandard2.1;net6.0;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 5d745ff1..a18edf89 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>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+	  <TargetFrameworks>net481;netstandard2.1;net6.0;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 9eeadae7..9218c71a 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>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;netstandard2.1;net6.0;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 cdb22402..82b760b4 100644
--- a/LibreMetaverse/LibreMetaverse.csproj
+++ b/LibreMetaverse/LibreMetaverse.csproj
@@ -11,7 +11,7 @@
 	<IncludeSymbols>true</IncludeSymbols>
 	<SymbolPackageFormat>snupkg</SymbolPackageFormat>
     <NoWarn>$(NoWarn);CS8981;CS1591</NoWarn>
-    <TargetFrameworks>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;netstandard2.1;net6.0;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 0757b2f4..d72b093a 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>net48;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;netstandard2.1;net6.0;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 dccf28f3..23f7b5d6 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>net48;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;net6.0;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 21770b57..f153532b 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>net48;net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net481;net6.0;net7.0;net8.0</TargetFrameworks>
     <PlatformTarget>AnyCPU</PlatformTarget>
 	<IncludeSymbols>true</IncludeSymbols>
 	<SymbolPackageFormat>snupkg</SymbolPackageFormat>