diff --git a/src/IKVM.ByteCode/Buffers/SequenceReader.Search.cs b/src/IKVM.ByteCode/Buffers/SequenceReader.Search.cs
index d96da03..4396d82 100644
--- a/src/IKVM.ByteCode/Buffers/SequenceReader.Search.cs
+++ b/src/IKVM.ByteCode/Buffers/SequenceReader.Search.cs
@@ -1,4 +1,4 @@
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
diff --git a/src/IKVM.ByteCode/Buffers/SequenceReader.cs b/src/IKVM.ByteCode/Buffers/SequenceReader.cs
index 4eed773..8723a71 100644
--- a/src/IKVM.ByteCode/Buffers/SequenceReader.cs
+++ b/src/IKVM.ByteCode/Buffers/SequenceReader.cs
@@ -1,4 +1,4 @@
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
diff --git a/src/IKVM.ByteCode/Buffers/SequenceReaderExtensions.cs b/src/IKVM.ByteCode/Buffers/SequenceReaderExtensions.cs
index 360c223..8219042 100644
--- a/src/IKVM.ByteCode/Buffers/SequenceReaderExtensions.cs
+++ b/src/IKVM.ByteCode/Buffers/SequenceReaderExtensions.cs
@@ -75,7 +75,7 @@ public static bool TryRead(ref this SequenceReader<byte> reader, out sbyte value
             return false;
         }
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         /// <summary>
         /// Reads an <see cref="Int16"/> as big endian.
@@ -120,7 +120,7 @@ private static bool TryReadReverseEndianness(ref SequenceReader<byte> reader, ou
             return false;
         }
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         /// <summary>
         /// Reads an <see cref="Int32"/> as big endian.
@@ -160,7 +160,7 @@ static bool TryReadReverseEndianness(ref SequenceReader<byte> reader, out int va
             return false;
         }
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         /// <summary>
         /// Reads an <see cref="Int64"/> as big endian.
diff --git a/src/IKVM.ByteCode/IKVM.ByteCode.csproj b/src/IKVM.ByteCode/IKVM.ByteCode.csproj
index f050bb2..bdd1269 100644
--- a/src/IKVM.ByteCode/IKVM.ByteCode.csproj
+++ b/src/IKVM.ByteCode/IKVM.ByteCode.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net472;net6.0;net7.0;net8.0</TargetFrameworks>
+        <TargetFrameworks>net472;net6.0;net7.0;net8.0;netstandard2.0</TargetFrameworks>
         <Nullable>enable</Nullable>
         <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
         <PackageLicenseFile>LICENSE</PackageLicenseFile>
@@ -18,7 +18,7 @@
         <InternalsVisibleTo Include="IKVM.ByteCode.Tests" />
     </ItemGroup>
 
-    <ItemGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net461'))">
+    <ItemGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net461')) Or $([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'netstandard2.0'))">
         <PackageReference Include="System.Memory" Version="4.5.5" />
         <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
     </ItemGroup>
diff --git a/src/IKVM.ByteCode/OpCodeExtensions.cs b/src/IKVM.ByteCode/OpCodeExtensions.cs
index 05f8cb8..ff6c6a0 100644
--- a/src/IKVM.ByteCode/OpCodeExtensions.cs
+++ b/src/IKVM.ByteCode/OpCodeExtensions.cs
@@ -13,7 +13,7 @@ public static class OpCodeExtensions
         /// <returns></returns>
         public static bool IsValid(this OpCode opcode)
         {
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
             return Enum.IsDefined(typeof(OpCode), opcode);
 #else
             return Enum.IsDefined<OpCode>(opcode);
diff --git a/src/IKVM.ByteCode/Text/EncodingExtensions.cs b/src/IKVM.ByteCode/Text/EncodingExtensions.cs
index 1c925c1..e5e1a46 100644
--- a/src/IKVM.ByteCode/Text/EncodingExtensions.cs
+++ b/src/IKVM.ByteCode/Text/EncodingExtensions.cs
@@ -6,7 +6,7 @@ namespace IKVM.ByteCode.Text
     static class EncodingExtensions
     {
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         public static unsafe string GetString(this System.Text.Encoding self, ReadOnlySpan<byte> bytes)
         {
diff --git a/src/IKVM.ByteCode/Text/MUTF8Encoding.cs b/src/IKVM.ByteCode/Text/MUTF8Encoding.cs
index a20acdb..66c153d 100644
--- a/src/IKVM.ByteCode/Text/MUTF8Encoding.cs
+++ b/src/IKVM.ByteCode/Text/MUTF8Encoding.cs
@@ -42,7 +42,7 @@ public override int GetByteCount(char[] chars, int index, int count)
             return GetByteCount(chars.AsSpan(index, count));
         }
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         public unsafe int GetByteCount(ReadOnlySpan<char> chars)
         {
@@ -113,7 +113,7 @@ public override int GetBytes(char[] chars, int charIndex, int charCount, byte[]
             return GetBytes(chars.AsSpan(charIndex, charCount), bytes.AsSpan(byteIndex));
         }
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         public unsafe int GetBytes(ReadOnlySpan<char> chars, Span<byte> bytes)
         {
@@ -173,7 +173,7 @@ public override unsafe int GetBytes(char* chars, int charCount, byte* bytes, int
             return j;
         }
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         public unsafe int GetCharCount(ReadOnlySpan<byte> bytes)
         {
@@ -223,7 +223,7 @@ public unsafe override int GetChars(byte[] bytes, int byteIndex, int byteCount,
             return GetChars(bytes.AsSpan(byteIndex, byteCount), chars.AsSpan(charIndex));
         }
 
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD
 
         /// <inheritdoc />
         public unsafe int GetChars(ReadOnlySpan<byte> bytes, Span<char> chars)