diff --git a/src/Core/Core.csproj b/src/Core/Core.csproj
index 7364df3feb..8fca8e74a5 100644
--- a/src/Core/Core.csproj
+++ b/src/Core/Core.csproj
@@ -8,7 +8,7 @@
     <AssemblyName>Reko.Core</AssemblyName>
     <RootNamespace>Reko.Core</RootNamespace>
     <OutputType>Library</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFrameworks>net6.0;net8.0</TargetFrameworks >
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <Configurations>Debug;Release</Configurations>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
diff --git a/src/Core/IO/SpanStream.cs b/src/Core/IO/SpanStream.cs
index 5c16df3ca9..1f5ab0d7fd 100644
--- a/src/Core/IO/SpanStream.cs
+++ b/src/Core/IO/SpanStream.cs
@@ -271,8 +271,12 @@ public override int Read(byte[] buffer, int offset, int count) {
 
 		public unsafe void Write<T>(T value) where T : unmanaged {
 			var start = Memory.Span.Slice(pos, sizeof(T));
+#if NET6_0
             MemoryMarshal.Write(start, ref value);
-			pos += sizeof(T);
+#else
+            MemoryMarshal.Write(start, in value);
+#endif
+            pos += sizeof(T);
 		}
 
 		public unsafe void WriteAt<T>(long offset, T value) where T : unmanaged {
diff --git a/src/Decompiler/Decompiler.csproj b/src/Decompiler/Decompiler.csproj
index d17d222880..8f155dad38 100644
--- a/src/Decompiler/Decompiler.csproj
+++ b/src/Decompiler/Decompiler.csproj
@@ -5,7 +5,7 @@
   <Import Project="$(ProjectDir)../Drivers/ApiTracking.items "/>
   -->
 	<PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
     <AssemblyName>Reko.Decompiler</AssemblyName>
     <RootNamespace>Reko</RootNamespace>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>