diff --git a/pkgs/by-name/kn/knossosnet/deps.json b/pkgs/by-name/kn/knossosnet/deps.json
index cdcba8706613..a5b62c2eb37b 100644
--- a/pkgs/by-name/kn/knossosnet/deps.json
+++ b/pkgs/by-name/kn/knossosnet/deps.json
@@ -504,11 +504,6 @@
     "version": "4.7.1",
     "hash": "sha256-UvyoDV8O0oY3HPG1GbA56YVdvwTGEfjYR5gW1O7IK4U="
   },
-  {
-    "pname": "System.Runtime.CompilerServices.Unsafe",
-    "version": "6.0.0",
-    "hash": "sha256-bEG1PnDp7uKYz/OgLOWs3RWwQSVYm+AnPwVmAmcgp2I="
-  },
   {
     "pname": "System.Runtime.Extensions",
     "version": "4.3.0",
diff --git a/pkgs/by-name/kn/knossosnet/dotnet-8-upgrade.patch b/pkgs/by-name/kn/knossosnet/dotnet-8-upgrade.patch
new file mode 100644
index 000000000000..5ed204921613
--- /dev/null
+++ b/pkgs/by-name/kn/knossosnet/dotnet-8-upgrade.patch
@@ -0,0 +1,39 @@
+diff --git a/IonKiwi.lz4/IonKiwi.lz4.csproj b/IonKiwi.lz4/IonKiwi.lz4.csproj
+index 312984f..804be5c 100644
+--- a/IonKiwi.lz4/IonKiwi.lz4.csproj
++++ b/IonKiwi.lz4/IonKiwi.lz4.csproj
+@@ -1,7 +1,7 @@
+ <Project Sdk="Microsoft.NET.Sdk">
+ 
+ 	<PropertyGroup>
+-		<TargetFrameworks>net60</TargetFrameworks>
++		<TargetFramework>net8.0</TargetFramework>
+ 		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+ 		<PackageId>IonKiwi.lz4.managed</PackageId>
+ 		<Version>1.0.7</Version>
+diff --git a/Knossos.NET/Knossos.NET.csproj b/Knossos.NET/Knossos.NET.csproj
+index 501faaa..4b563f1 100644
+--- a/Knossos.NET/Knossos.NET.csproj
++++ b/Knossos.NET/Knossos.NET.csproj
+@@ -1,7 +1,7 @@
+ <Project Sdk="Microsoft.NET.Sdk">
+   <PropertyGroup>
+     <OutputType>WinExe</OutputType>
+-    <TargetFramework>net6.0</TargetFramework>
++    <TargetFramework>net8.0</TargetFramework>
+     <Nullable>enable</Nullable>
+     <!--Avalonia doesen't support TrimMode=link currently,but we are working on that https://github.com/AvaloniaUI/Avalonia/issues/6892 -->
+     <TrimMode>copyused</TrimMode>
+diff --git a/VP.NET/VP.NET.csproj b/VP.NET/VP.NET.csproj
+index 11fa155..2eef420 100644
+--- a/VP.NET/VP.NET.csproj
++++ b/VP.NET/VP.NET.csproj
+@@ -1,7 +1,7 @@
+ <Project Sdk="Microsoft.NET.Sdk">
+ 
+   <PropertyGroup>
+-    <TargetFramework>net6.0</TargetFramework>
++    <TargetFramework>net8.0</TargetFramework>
+     <ImplicitUsings>enable</ImplicitUsings>
+     <Nullable>enable</Nullable>
+   </PropertyGroup>
diff --git a/pkgs/by-name/kn/knossosnet/package.nix b/pkgs/by-name/kn/knossosnet/package.nix
index 90667c645c27..a29b3135c981 100644
--- a/pkgs/by-name/kn/knossosnet/package.nix
+++ b/pkgs/by-name/kn/knossosnet/package.nix
@@ -17,9 +17,9 @@ buildDotnetModule rec {
     hash = "sha256-vlSiM6kskV4wfBZF7Rv5ICyqKG0Zhz/iU8kflYOaf0U=";
   };
 
-  patches = [ ./targetframework.patch ];
+  patches = [ ./dotnet-8-upgrade.patch ];
 
-  dotnet-sdk = dotnetCorePackages.sdk_6_0;
+  dotnet-sdk = dotnetCorePackages.sdk_8_0;
   nugetDeps = ./deps.json;
   executables = [ "Knossos.NET" ];
 
diff --git a/pkgs/by-name/kn/knossosnet/targetframework.patch b/pkgs/by-name/kn/knossosnet/targetframework.patch
deleted file mode 100644
index 2802a18053c4..000000000000
--- a/pkgs/by-name/kn/knossosnet/targetframework.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -Naur Knossos.NET-0.1.4/IonKiwi.lz4/IonKiwi.lz4.csproj Knossos.NET-0.1.4.new/IonKiwi.lz4/IonKiwi.lz4.csproj
---- Knossos.NET-0.1.4/IonKiwi.lz4/IonKiwi.lz4.csproj	2023-10-18 15:17:20.000000000 -0400
-+++ Knossos.NET-0.1.4.new/IonKiwi.lz4/IonKiwi.lz4.csproj	2024-01-03 17:39:56.809971086 -0500
-@@ -1,7 +1,7 @@
- <Project Sdk="Microsoft.NET.Sdk">
- 
- 	<PropertyGroup>
--		<TargetFrameworks>net60</TargetFrameworks>
-+		<TargetFramework>net6.0</TargetFramework>
- 		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
- 		<PackageId>IonKiwi.lz4.managed</PackageId>
- 		<Version>1.0.7</Version>