pythonnet · filmor · Oct 1, 2024 · Aug 10, 2025 · Aug 11, 2025
diff --git a/.github/workflows/ARM.yml b/.github/workflows/ARM.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: '6.0.x'
+          dotnet-version: '8.0.x'
 
       - name: Clean previous install
         run: |

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -37,7 +37,7 @@ jobs:
         # This fails in pytest with:
         # CSC : error CS4023: /platform:anycpu32bitpreferred can only be used with /t:exe, /t:winexe and /t:appcontainerexe [D:\a\pythonnet\pythonnet\src\runtime\Python.Runtime.csproj]
         exclude:
-          - os: 
+          - os:
               category: windows
               platform: x86
             python: "3.13"
@@ -55,7 +55,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: '6.0.x'
+          dotnet-version: '8.0.x'
 
       - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v2

diff --git a/src/embed_tests/Python.EmbeddingTest.csproj b/src/embed_tests/Python.EmbeddingTest.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net472;net6.0</TargetFrameworks>
+    <TargetFrameworks>net472;net8.0</TargetFrameworks>
     <AssemblyOriginatorKeyFile>..\pythonnet.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
   </PropertyGroup>

diff --git a/src/python_tests_runner/Python.PythonTestsRunner.csproj b/src/python_tests_runner/Python.PythonTestsRunner.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net472;net6.0</TargetFrameworks>
+    <TargetFrameworks>net472;net8.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>

diff --git a/src/runtime/StateSerialization/RuntimeData.cs b/src/runtime/StateSerialization/RuntimeData.cs
@@ -18,11 +18,19 @@ public static class RuntimeData
 
         public readonly static Func<IFormatter> DefaultFormatterFactory = () =>
         {
-            try
+            var fw = RuntimeInformation.FrameworkDescription;
+            if (fw.StartsWith(".NET Framework") || fw.StartsWith("Mono"))
             {
-                return new BinaryFormatter();
+                try
+                {
+                    return new BinaryFormatter();
+                }
+                catch
+                {
+                    return new NoopFormatter();
+                }
             }
-            catch
+            else
             {
                 return new NoopFormatter();
             }

diff --git a/src/testing/Python.Test.csproj b/src/testing/Python.Test.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
     <AssemblyOriginatorKeyFile>..\pythonnet.snk</AssemblyOriginatorKeyFile>