diff --git a/.gitea/workflows/publish.yml b/.gitea/workflows/publish.yml
index 20ce50a..4781f2a 100644
--- a/.gitea/workflows/publish.yml
+++ b/.gitea/workflows/publish.yml
@@ -71,8 +71,6 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v4
-
       - name: Download artifacts
         uses: actions/download-artifact@v3
         with:
@@ -84,81 +82,6 @@ jobs:
           mv artifacts/build-net9/*.zip  "artifacts/build-net9/Jellyfin-AutoBackup-${VER}-10.11.x.zip"
           mv artifacts/build-net10/*.zip "artifacts/build-net10/Jellyfin-AutoBackup-${VER}-12.0.x.zip"
 
-      - name: Update manifest.json
-        run: |
-          VER="${GITHUB_REF_NAME#v}"
-          BASE_URL="${{ github.server_url }}/${{ github.repository }}/releases/download/${{ github.ref_name }}"
-          NET9_FILE="artifacts/build-net9/Jellyfin-AutoBackup-${VER}-10.11.x.zip"
-          NET10_FILE="artifacts/build-net10/Jellyfin-AutoBackup-${VER}-12.0.x.zip"
-          TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
-          NET9_MD5=$(md5sum "${NET9_FILE}" | cut -d' ' -f1)
-          NET10_MD5=$(md5sum "${NET10_FILE}" | cut -d' ' -f1)
-
-          python3 - <<EOF
-          import json, sys
-
-          with open('manifest.json') as f:
-              manifest = json.load(f)
-
-          guid = '1175543c-6d20-4cfa-93a6-1476836df34c'
-          ver = '${VER}'
-          base_url = '${BASE_URL}'
-          timestamp = '${TIMESTAMP}'
-          net9_md5 = '${NET9_MD5}'
-          net10_md5 = '${NET10_MD5}'
-
-          plugin = next((p for p in manifest if p['guid'] == guid), None)
-          if not plugin:
-              plugin = {
-                  'guid': guid,
-                  'name': 'Auto Backup',
-                  'description': 'Automated scheduled ZIP backups of Jellyfin data.',
-                  'overview': 'Automated scheduled ZIP backups of Jellyfin data.',
-                  'owner': 'Filtik',
-                  'category': 'General',
-                  'imageUrl': 'https://gitea.home.filtik.de/Filtik/Jellyfin-AutoBackup/raw/branch/main/images/logo.png',
-                  'versions': []
-              }
-              manifest.append(plugin)
-
-          # Remove existing entries for this version
-          plugin['versions'] = [v for v in plugin['versions'] if v['version'] != ver]
-
-          plugin['versions'].insert(0, {
-              'version': ver,
-              'changelog': '',
-              'targetAbi': '12.0.0.0',
-              'sourceUrl': f'{base_url}/Jellyfin-AutoBackup-{ver}-12.0.x.zip',
-              'checksum': net10_md5,
-              'timestamp': timestamp
-          })
-          plugin['versions'].insert(0, {
-              'version': ver,
-              'changelog': '',
-              'targetAbi': '10.11.0.0',
-              'sourceUrl': f'{base_url}/Jellyfin-AutoBackup-{ver}-10.11.x.zip',
-              'checksum': net9_md5,
-              'timestamp': timestamp
-          })
-
-          with open('manifest.json', 'w') as f:
-              json.dump(manifest, f, indent=4)
-          print('manifest.json updated')
-          EOF
-
-      - name: Commit manifest.json
-        run: |
-          git config user.name "gitea-actions"
-          git config user.email "actions@noreply.local"
-          cp manifest.json /tmp/manifest_updated.json
-          git fetch origin main
-          git checkout -f main
-          git pull --rebase origin main
-          cp /tmp/manifest_updated.json manifest.json
-          git add manifest.json
-          git diff --staged --quiet || git commit -m "chore: update manifest for ${{ github.ref_name }}"
-          git push origin main
-
       - name: Create release and upload assets
         run: |
           API="${{ github.server_url }}/api/v1"
diff --git a/.gitignore b/.gitignore
index 0e1f3ce..14aee62 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 bin/
 obj/
 publish/
+dist/
 .vs/
 *.user
diff --git a/update-manifest.ps1 b/update-manifest.ps1
new file mode 100644
index 0000000..0c7c04e
--- /dev/null
+++ b/update-manifest.ps1
@@ -0,0 +1,90 @@
+param(
+    [Parameter(Mandatory)][string]$Version
+)
+
+$ErrorActionPreference = 'Stop'
+
+$ProjectDir  = $PSScriptRoot
+$Tag         = "v$Version"
+$BaseUrl     = "https://gitea.home.filtik.de/Filtik/Jellyfin-AutoBackup/releases/download/$Tag"
+$OutputDir   = Join-Path $ProjectDir "dist"
+$Guid        = '1175543c-6d20-4cfa-93a6-1476836df34c'
+$ManifestPath = Join-Path $ProjectDir "manifest.json"
+
+# Clean output dir
+if (Test-Path $OutputDir) { Remove-Item $OutputDir -Recurse -Force }
+New-Item $OutputDir -ItemType Directory | Out-Null
+
+# Build net9.0 (Jellyfin 10.x)
+Write-Host "Building net9.0..."
+dotnet publish "$ProjectDir/AutoBackup.csproj" -f net9.0 -c Release -o "$OutputDir/net9" --nologo -v q
+
+# Build net10.0 (Jellyfin 12.x)
+Write-Host "Building net10.0..."
+dotnet publish "$ProjectDir/AutoBackup.csproj" -f net10.0 -c Release -o "$OutputDir/net10" --nologo -v q
+
+# Create ZIPs (only the DLL)
+$Net9Zip  = "$OutputDir\Jellyfin-AutoBackup-$Version-10.11.x.zip"
+$Net10Zip = "$OutputDir\Jellyfin-AutoBackup-$Version-12.0.x.zip"
+
+Compress-Archive -Path "$OutputDir\net9\Jellyfin.Plugin.AutoBackup.dll"  -DestinationPath $Net9Zip
+Compress-Archive -Path "$OutputDir\net10\Jellyfin.Plugin.AutoBackup.dll" -DestinationPath $Net10Zip
+
+Write-Host "ZIPs created:"
+Write-Host "  $Net9Zip"
+Write-Host "  $Net10Zip"
+
+# Compute MD5 checksums
+$Net9Md5  = (Get-FileHash $Net9Zip  -Algorithm MD5).Hash.ToLower()
+$Net10Md5 = (Get-FileHash $Net10Zip -Algorithm MD5).Hash.ToLower()
+
+# Update manifest.json
+$Timestamp = (Get-Date).ToUniversalTime().ToString('yyyy-MM-ddTHH:mm:ssZ')
+
+$manifest = Get-Content $ManifestPath -Raw | ConvertFrom-Json
+
+$plugin = $manifest | Where-Object { $_.guid -eq $Guid }
+if (-not $plugin) {
+    $plugin = [PSCustomObject]@{
+        guid        = $Guid
+        name        = 'Auto Backup'
+        description = 'Automated scheduled ZIP backups of Jellyfin data.'
+        overview    = 'Automated scheduled ZIP backups of Jellyfin data.'
+        owner       = 'Filtik'
+        category    = 'General'
+        imageUrl    = 'https://gitea.home.filtik.de/Filtik/Jellyfin-AutoBackup/raw/branch/main/images/logo.png'
+        versions    = @()
+    }
+    $manifest = @($plugin)
+}
+
+# Remove existing entries for this version
+$plugin.versions = @($plugin.versions | Where-Object { $_.version -ne $Version })
+
+# Prepend new entries (net9 first, net10 second)
+$plugin.versions = @(
+    [PSCustomObject]@{
+        version   = $Version
+        changelog = ''
+        targetAbi = '10.11.0.0'
+        sourceUrl = "$BaseUrl/Jellyfin-AutoBackup-$Version-10.11.x.zip"
+        checksum  = $Net9Md5
+        timestamp = $Timestamp
+    },
+    [PSCustomObject]@{
+        version   = $Version
+        changelog = ''
+        targetAbi = '12.0.0.0'
+        sourceUrl = "$BaseUrl/Jellyfin-AutoBackup-$Version-12.0.x.zip"
+        checksum  = $Net10Md5
+        timestamp = $Timestamp
+    }
+) + $plugin.versions
+
+[System.IO.File]::WriteAllText($ManifestPath, ($manifest | ConvertTo-Json -Depth 10))
+Write-Host "manifest.json updated."
+Write-Host ""
+Write-Host "Next steps:"
+Write-Host "  1. git add manifest.json && git commit -m 'chore: update manifest for $Tag'"
+Write-Host "  2. git push"
+Write-Host "  3. git tag $Tag && git push origin $Tag"