diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 15029cd..a73dbee 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,9 +2,9 @@ name: Build (Windows)
 
 on:
   push:
-    branches: [ "master", "main" ]
+    branches: [ "master", "main", "sow/**" ]
   pull_request:
-    branches: [ "master", "main" ]
+    branches: [ "master", "main", "sow/**" ]
   workflow_dispatch:
 
 jobs:
@@ -35,6 +35,36 @@ jobs:
 
       - name: Setup MSBuild
         uses: microsoft/setup-msbuild@v2
+      - name: Compute SAMVersion
+        id: ver
+        shell: pwsh
+        run: |
+          $ErrorActionPreference = 'Stop'
+          # Prefer head_ref when its a sow branch (release-promotion PRs from sow/* to main),
+          # else use base_ref on PR events / ref_name on push events.
+          $headRef = '${{ github.head_ref }}'
+          $baseRef = '${{ github.base_ref }}'
+          $refName = '${{ github.ref_name }}'
+          if ($headRef -match '^sow/\d{4}-Q\d$') {
+            $ref = $headRef
+          } elseif ('${{ github.event_name }}' -eq 'pull_request') {
+            $ref = $baseRef
+          } else {
+            $ref = $refName
+          }
+          # .NET AssemblyVersion components are UInt16 (max 65535). Cap to 60000 for headroom.
+          $run = ${{ github.run_number }} % 60000
+          if ($ref -match 'sow/(\d{4})-Q(\d)') {
+            $v = "$($Matches[1]).$($Matches[2]).$run.0"
+            $src = "branch '$ref'"
+          } else {
+            $now = (Get-Date).ToUniversalTime()
+            $quarter = [int][Math]::Ceiling($now.Month / 3.0)
+            $v = "$($now.Year).$quarter.$run.0"
+            $src = "date $($now.ToString('yyyy-MM-dd')) (ref '$ref' not sow/yyyy-Qx)"
+          }
+          Write-Host "SAMVersion = $v (from $src)"
+          "samversion=$v" | Out-File -FilePath $env:GITHUB_OUTPUT -Append -Encoding utf8
 
       - name: Clone dependency repos (siblings)
         shell: pwsh
@@ -55,10 +85,32 @@ jobs:
           $deps = $buildOrder[0..($buildOrder.Count-2)]
           foreach ($r in $deps) {
             if (Test-Path $r) { continue }
-            Write-Host "Cloning https://github.com/$org/$r.git"
-            git clone --depth 1 "https://github.com/$org/$r.git" $r
+            $headRef = '${{ github.head_ref }}'
+            $baseRef = '${{ github.base_ref }}'
+            $refName = '${{ github.ref_name }}'
+            $candidates = @()
+            if ($headRef) { $candidates += $headRef }
+            # Current sow branch: base_ref on PR events, ref_name on push events.
+            $sowRef = if ($baseRef -match '^sow/') { $baseRef } elseif ($refName -match '^sow/') { $refName } else { '' }
+            if ($sowRef -and $sowRef -ne $headRef) { $candidates += $sowRef }
+            $candidates += 'sow/2026-Q2'
+            $cloned = $false
+            foreach ($cand in $candidates) {
+              $has = (git ls-remote --heads "https://github.com/$org/$r.git" $cand 2>$null | Out-String).Trim()
+              if ($has) {
+                Write-Host "Cloning $org/$r @ $cand"
+                git clone --depth 1 --branch $cand "https://github.com/$org/$r.git" $r
+                $cloned = $true
+                break
+              }
+            }
+            if (-not $cloned) {
+              Write-Host "Cloning $org/$r @ default branch"
+              git clone --depth 1 "https://github.com/$org/$r.git" $r
+            }
           }
 
+
           # Ensure ReferencePath exists even before SAM_Windows builds
           New-Item -ItemType Directory -Force -Path "SAM_Windows\build" | Out-Null
 
@@ -77,6 +129,7 @@ jobs:
             '/v:m'
             '/p:Configuration=Release'
             '/p:UseSharedCompilation=false'
+            '/p:SAMVersion=${{ steps.ver.outputs.samversion }}'
             '/p:RunPostBuildEvent=OnOutputUpdated'
             "/p:ReferencePath=$windowsRef"
           )
diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 0000000..509f4c6
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,57 @@
+<Project>
+
+  <PropertyGroup>
+    <!-- Local dev builds default to 1.0.0.0. CI passes /p:SAMVersion=YYYY.Q.<run_number>.0. -->
+    <SAMVersion Condition="'$(SAMVersion)' == ''">1.0.0.0</SAMVersion>
+    <AssemblyVersion>$(SAMVersion)</AssemblyVersion>
+    <FileVersion>$(SAMVersion)</FileVersion>
+    <!--
+      InformationalVersion: the content-identity stamp (SemVer +build metadata).
+      Composed from SAMVersion + SAMSourceRevision when CI sets the latter. If CI already
+      set InformationalVersion directly (e.g. SAM_Deploy installer.yml does this), respect
+      that and don't overwrite. Local dev builds leave both empty -> no SHA attribute emitted.
+    -->
+    <InformationalVersion Condition="'$(InformationalVersion)' == '' AND '$(SAMSourceRevision)' != ''">$(SAMVersion)+$(SAMSourceRevision)</InformationalVersion>
+    <!--
+      Suppress the SDK's SourceLink auto-append behaviour. By default, when SourceLink is
+      configured on a project (via NuGet or repo settings), the SDK appends the project's
+      OWN commit SHA to InformationalVersion (e.g. '2026.2.164.0+998af06.dd02a4c2...').
+      We set InformationalVersion explicitly to SAM_Deploy's SHA (which encodes all 22
+      submodule pointers), so the SDK's extra append is noise. False = keep our value clean.
+    -->
+    <IncludeSourceRevisionInInformationalVersion>false</IncludeSourceRevisionInInformationalVersion>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+
+  <!--
+    Projects where SDK assembly-attribute generation is disabled (legacy AssemblyInfo.cs
+    with GenerateAssemblyInfo=false) OR projects where the SDK doesn't auto-generate
+    attributes at all (classic-style csprojs that don't set the property — '' evaluates
+    as not 'true') ignore the AssemblyVersion/FileVersion MSBuild properties above.
+    Inject the attributes via a generated source file so those assemblies also get
+    stamped by CI.
+  -->
+  <Target Name="_GenerateSAMVersionFile"
+          BeforeTargets="CoreCompile"
+          Condition="'$(GenerateAssemblyInfo)' != 'true'">
+    <ItemGroup>
+      <_SAMVersionLine Include="// &lt;auto-generated /&gt;" />
+      <_SAMVersionLine Include="[assembly: System.Reflection.AssemblyVersionAttribute(&quot;$(SAMVersion)&quot;)]" />
+      <_SAMVersionLine Include="[assembly: System.Reflection.AssemblyFileVersionAttribute(&quot;$(SAMVersion)&quot;)]" />
+      <!-- Only emit InformationalVersion attribute when CI provided a value (SDK projects
+           would otherwise get it via PropertyGroup -> SDK auto-gen). -->
+      <_SAMVersionLine Include="[assembly: System.Reflection.AssemblyInformationalVersionAttribute(&quot;$(InformationalVersion)&quot;)]" Condition="'$(InformationalVersion)' != ''" />
+    </ItemGroup>
+    <MakeDir Directories="$(IntermediateOutputPath)" />
+    <WriteLinesToFile
+      File="$(IntermediateOutputPath)SAMVersion.g.cs"
+      Lines="@(_SAMVersionLine)"
+      Overwrite="true"
+      WriteOnlyWhenDifferent="true" />
+    <ItemGroup>
+      <Compile Include="$(IntermediateOutputPath)SAMVersion.g.cs" KeepDuplicates="false" />
+      <FileWrites Include="$(IntermediateOutputPath)SAMVersion.g.cs" />
+    </ItemGroup>
+  </Target>
+
+</Project>
diff --git a/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Kernel/AssemblyInfo.cs b/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
index ea0a9dc..12667d7 100644
--- a/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
+++ b/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
@@ -1,4 +1,7 @@
-using Grasshopper.Kernel;
+// SPDX-License-Identifier: LGPL-3.0-or-later
+// Copyright (c) 2020–2026 Michal Dengusiak & Jakub Ziolkowski and contributors
+
+using Grasshopper.Kernel;
 using System;
 using System.Drawing;
 
diff --git a/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Properties/AssemblyInfo.cs b/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Properties/AssemblyInfo.cs
index d2c0151..aaa5bd6 100644
--- a/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Properties/AssemblyInfo.cs
+++ b/Grasshopper/SAM.Analytical.Grasshopper.Topologic/Properties/AssemblyInfo.cs
@@ -55,6 +55,3 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/Grasshopper/SAM.Analytical.Grasshopper.Topologic/SAM.Analytical.Grasshopper.Topologic.csproj b/Grasshopper/SAM.Analytical.Grasshopper.Topologic/SAM.Analytical.Grasshopper.Topologic.csproj
index 1adb99b..be73021 100644
--- a/Grasshopper/SAM.Analytical.Grasshopper.Topologic/SAM.Analytical.Grasshopper.Topologic.csproj
+++ b/Grasshopper/SAM.Analytical.Grasshopper.Topologic/SAM.Analytical.Grasshopper.Topologic.csproj
@@ -10,7 +10,6 @@
 	  <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 	  <UseWindowsForms>true</UseWindowsForms>
     <ImportWindowsDesktopTargets>true</ImportWindowsDesktopTargets>
-    <Deterministic>false</Deterministic>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
   </PropertyGroup>
@@ -70,9 +69,7 @@
       <Version>8.21.25188.17001</Version>
       <ExcludeAssets>runtime</ExcludeAssets>
     </PackageReference>
-    <PackageReference Include="Newtonsoft.Json">
-      <Version>13.0.3</Version>
-    </PackageReference>
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
   <PropertyGroup />
   <PropertyGroup>
diff --git a/Grasshopper/SAM.Core.Grasshopper.Topologic/Kernel/AssemblyInfo.cs b/Grasshopper/SAM.Core.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
index bf2e417..0aaee5f 100644
--- a/Grasshopper/SAM.Core.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
+++ b/Grasshopper/SAM.Core.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
@@ -1,4 +1,7 @@
-using Grasshopper.Kernel;
+// SPDX-License-Identifier: LGPL-3.0-or-later
+// Copyright (c) 2020–2026 Michal Dengusiak & Jakub Ziolkowski and contributors
+
+using Grasshopper.Kernel;
 using System;
 using System.Drawing;
 
diff --git a/Grasshopper/SAM.Core.Grasshopper.Topologic/Properties/AssemblyInfo.cs b/Grasshopper/SAM.Core.Grasshopper.Topologic/Properties/AssemblyInfo.cs
index 08fb1d4..f3ba277 100644
--- a/Grasshopper/SAM.Core.Grasshopper.Topologic/Properties/AssemblyInfo.cs
+++ b/Grasshopper/SAM.Core.Grasshopper.Topologic/Properties/AssemblyInfo.cs
@@ -55,6 +55,3 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/Grasshopper/SAM.Core.Grasshopper.Topologic/SAM.Core.Grasshopper.Topologic.csproj b/Grasshopper/SAM.Core.Grasshopper.Topologic/SAM.Core.Grasshopper.Topologic.csproj
index 5782f21..3fa508b 100644
--- a/Grasshopper/SAM.Core.Grasshopper.Topologic/SAM.Core.Grasshopper.Topologic.csproj
+++ b/Grasshopper/SAM.Core.Grasshopper.Topologic/SAM.Core.Grasshopper.Topologic.csproj
@@ -10,7 +10,6 @@
 	  <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 	  <UseWindowsForms>true</UseWindowsForms>
     <ImportWindowsDesktopTargets>true</ImportWindowsDesktopTargets>
-    <Deterministic>false</Deterministic>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
   </PropertyGroup>
@@ -51,9 +50,7 @@
       <ExcludeAssets>runtime</ExcludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="Newtonsoft.Json">
-      <Version>13.0.3</Version>
-    </PackageReference>
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
   <PropertyGroup />
   <PropertyGroup>
diff --git a/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Kernel/AssemblyInfo.cs b/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
index e0893a4..ef91e90 100644
--- a/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
+++ b/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Kernel/AssemblyInfo.cs
@@ -1,4 +1,7 @@
-using Grasshopper.Kernel;
+// SPDX-License-Identifier: LGPL-3.0-or-later
+// Copyright (c) 2020–2026 Michal Dengusiak & Jakub Ziolkowski and contributors
+
+using Grasshopper.Kernel;
 using System;
 using System.Drawing;
 
diff --git a/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Properties/AssemblyInfo.cs b/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Properties/AssemblyInfo.cs
index bcdd67f..c080d39 100644
--- a/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Properties/AssemblyInfo.cs
+++ b/Grasshopper/SAM.Geometry.Grasshopper.Topologic/Properties/AssemblyInfo.cs
@@ -55,6 +55,3 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/Grasshopper/SAM.Geometry.Grasshopper.Topologic/SAM.Geometry.Grasshopper.Topologic.csproj b/Grasshopper/SAM.Geometry.Grasshopper.Topologic/SAM.Geometry.Grasshopper.Topologic.csproj
index 7f65815..566ba8c 100644
--- a/Grasshopper/SAM.Geometry.Grasshopper.Topologic/SAM.Geometry.Grasshopper.Topologic.csproj
+++ b/Grasshopper/SAM.Geometry.Grasshopper.Topologic/SAM.Geometry.Grasshopper.Topologic.csproj
@@ -10,7 +10,6 @@
 	  <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 	  <UseWindowsForms>true</UseWindowsForms>
     <ImportWindowsDesktopTargets>true</ImportWindowsDesktopTargets>
-    <Deterministic>false</Deterministic>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
   </PropertyGroup>
@@ -58,9 +57,7 @@
       <Version>8.21.25188.17001</Version>
       <ExcludeAssets>runtime</ExcludeAssets>
     </PackageReference>
-    <PackageReference Include="Newtonsoft.Json">
-      <Version>13.0.3</Version>
-    </PackageReference>
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
   <PropertyGroup />
   <PropertyGroup>
diff --git a/SAM_Topologic/SAM.Analytical.Topologic/Properties/AssemblyInfo.cs b/SAM_Topologic/SAM.Analytical.Topologic/Properties/AssemblyInfo.cs
index 2c3e0d1..ca82c5a 100644
--- a/SAM_Topologic/SAM.Analytical.Topologic/Properties/AssemblyInfo.cs
+++ b/SAM_Topologic/SAM.Analytical.Topologic/Properties/AssemblyInfo.cs
@@ -1,4 +1,7 @@
-using System.Reflection;
+// SPDX-License-Identifier: LGPL-3.0-or-later
+// Copyright (c) 2020–2026 Michal Dengusiak & Jakub Ziolkowski and contributors
+
+using System.Reflection;
 using System.Runtime.InteropServices;
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
diff --git a/SAM_Topologic/SAM.Analytical.Topologic/SAM.Analytical.Topologic.csproj b/SAM_Topologic/SAM.Analytical.Topologic/SAM.Analytical.Topologic.csproj
index b7d7db6..5890e8f 100644
--- a/SAM_Topologic/SAM.Analytical.Topologic/SAM.Analytical.Topologic.csproj
+++ b/SAM_Topologic/SAM.Analytical.Topologic/SAM.Analytical.Topologic.csproj
@@ -2,7 +2,6 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <OutputType>Library</OutputType>
-    <Deterministic>False</Deterministic>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 	  <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
 	  <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
@@ -49,7 +48,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
   <PropertyGroup>
     <PostBuildEvent>Copy /Y "$(SolutionDir)references\TopologicCore.dll" "$(SolutionDir)build\TopologicCore.dll"
@@ -57,7 +56,5 @@ Copy /Y "$(SolutionDir)references\TK*.dll" "$(SolutionDir)build\TK*.dll"</PostBu
     <AssemblyTitle>SAM_Topologic</AssemblyTitle>
     <Product>SAM_Topologic</Product>
     <Copyright>Copyright ©  2019</Copyright>
-    <AssemblyVersion>1.0.0.0</AssemblyVersion>
-    <FileVersion>1.0.0.0</FileVersion>
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/SAM_Topologic/SAM.Core.Topologic/Properties/AssemblyInfo.cs b/SAM_Topologic/SAM.Core.Topologic/Properties/AssemblyInfo.cs
index 1aceea8..e9218cf 100644
--- a/SAM_Topologic/SAM.Core.Topologic/Properties/AssemblyInfo.cs
+++ b/SAM_Topologic/SAM.Core.Topologic/Properties/AssemblyInfo.cs
@@ -1,4 +1,7 @@
-/*
+// SPDX-License-Identifier: LGPL-3.0-or-later
+// Copyright (c) 2020–2026 Michal Dengusiak & Jakub Ziolkowski and contributors
+
+/*
  * This file is part of the Sustaiable Analytical Model (SAM)
  * Copyright (c) 2020, the respective contributors. All rights reserved.
  *
diff --git a/SAM_Topologic/SAM.Core.Topologic/SAM.Core.Topologic.csproj b/SAM_Topologic/SAM.Core.Topologic/SAM.Core.Topologic.csproj
index 52334f4..d4494b0 100644
--- a/SAM_Topologic/SAM.Core.Topologic/SAM.Core.Topologic.csproj
+++ b/SAM_Topologic/SAM.Core.Topologic/SAM.Core.Topologic.csproj
@@ -2,7 +2,6 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <OutputType>Library</OutputType>
-    <Deterministic>False</Deterministic>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 	  <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
 	  <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
@@ -33,7 +32,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
   <PropertyGroup>
     <PostBuildEvent>Copy /Y "$(SolutionDir)references\TopologicCore.dll" "$(SolutionDir)build\TopologicCore.dll"
@@ -41,8 +40,6 @@ Copy /Y "$(SolutionDir)references\TK*.dll" "$(SolutionDir)build\TK*.dll"
 Copy /Y "$(SolutionDir)references\tbb*.dll" "$(SolutionDir)build\tbb*.dll"</PostBuildEvent>
     <AssemblyTitle>SAM_Topologic</AssemblyTitle>
     <Product>SAM_Topologic</Product>
-    <Copyright>Copyright ©  2020</Copyright>
-    <AssemblyVersion>1.0.%2a</AssemblyVersion>
-    <FileVersion>1.0.%2a</FileVersion>
+    <Copyright>Copyright (c) 2020-2026 Michal Dengusiak &amp; Jakub Ziolkowski and contributors</Copyright>
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/SAM_Topologic/SAM.Geometry.Topologic/Properties/AssemblyInfo.cs b/SAM_Topologic/SAM.Geometry.Topologic/Properties/AssemblyInfo.cs
index 4ec2925..0ddc3bc 100644
--- a/SAM_Topologic/SAM.Geometry.Topologic/Properties/AssemblyInfo.cs
+++ b/SAM_Topologic/SAM.Geometry.Topologic/Properties/AssemblyInfo.cs
@@ -1,4 +1,7 @@
-/*
+// SPDX-License-Identifier: LGPL-3.0-or-later
+// Copyright (c) 2020–2026 Michal Dengusiak & Jakub Ziolkowski and contributors
+
+/*
  * This file is part of the Sustaiable Analytical Model (SAM)
  * Copyright (c) 2020, the respective contributors. All rights reserved.
  *
diff --git a/SAM_Topologic/SAM.Geometry.Topologic/SAM.Geometry.Topologic.csproj b/SAM_Topologic/SAM.Geometry.Topologic/SAM.Geometry.Topologic.csproj
index 200ef4e..95952aa 100644
--- a/SAM_Topologic/SAM.Geometry.Topologic/SAM.Geometry.Topologic.csproj
+++ b/SAM_Topologic/SAM.Geometry.Topologic/SAM.Geometry.Topologic.csproj
@@ -2,7 +2,6 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <OutputType>Library</OutputType>
-    <Deterministic>False</Deterministic>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 	  <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
 	  <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
@@ -28,15 +27,13 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
   <PropertyGroup>
-    <PostBuildEvent>Copy /Y "$(SolutionDir)references\TopologicCore.dll" "$(SolutionDir)build\TopologicCore.dll"
-Copy /Y "$(SolutionDir)references\TK*.dll" "$(SolutionDir)build\TK*.dll"</PostBuildEvent>
+    <PostBuildEvent>robocopy "$(SolutionDir)references" "$(SolutionDir)build" TopologicCore.dll /R:5 /W:2 &amp; IF %ERRORLEVEL% LEQ 7 SET ERRORLEVEL=0
+robocopy "$(SolutionDir)references" "$(SolutionDir)build" TK*.dll /R:5 /W:2 &amp; IF %ERRORLEVEL% LEQ 7 SET ERRORLEVEL=0</PostBuildEvent>
     <AssemblyTitle>SAM_Topologic</AssemblyTitle>
     <Product>SAM_Topologic</Product>
-    <Copyright>Copyright ©  2020</Copyright>
-    <AssemblyVersion>1.0.%2a</AssemblyVersion>
-    <FileVersion>1.0.%2a</FileVersion>
+    <Copyright>Copyright (c) 2020-2026 Michal Dengusiak &amp; Jakub Ziolkowski and contributors</Copyright>
   </PropertyGroup>
 </Project>
\ No newline at end of file