diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 81301da5..2924d34a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -295,6 +295,44 @@ jobs:
           set PATH=C:\Qt\5.15.2\msvc2019_64\bin;%PATH%
           nmake check TESTARGS="-maxwarnings 100000"
       
+      - name: Upload executables for signing
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        uses: actions/upload-artifact@v4
+        id: upload_executables
+        with:
+          name: windows-x64-executables-unsigned-${{ needs.initialization.outputs.build_number }}
+          path: |
+            release64/YACReader.exe
+            release64/YACReaderLibrary.exe
+            release64/YACReaderLibraryServer.exe
+      
+      - name: Sign executables with SignPath
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        uses: signpath/github-action-submit-signing-request@v1
+        with:
+          api-token: ${{ secrets.SIGNPATH_API_TOKEN }}
+          organization-id: ${{ secrets.SIGNPATH_ORGANIZATION_ID }}
+          project-slug: 'yacreader'
+          signing-policy-slug: 'release-signing'
+          artifact-configuration-slug: 'zipped-files'
+          github-artifact-id: ${{ steps.upload_executables.outputs.artifact-id }}
+          wait-for-completion: true
+          output-artifact-directory: release64/signed
+      
+      - name: Replace with signed executables
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        shell: pwsh
+        run: |
+          Write-Host "=== Replacing executables with signed versions ==="
+          Get-ChildItem -Path "release64/signed" -Filter "*.exe" | ForEach-Object {
+            $destPath = "release64/$($_.Name)"
+            Write-Host "Moving signed: $($_.Name) -> $destPath"
+            Move-Item -Path $_.FullName -Destination $destPath -Force
+            Write-Host "  Moved successfully"
+          }
+          Remove-Item -Path "release64/signed" -Recurse -Force -ErrorAction SilentlyContinue
+          Write-Host "Signed executables are ready for installer creation"
+      
       - name: Create installer
         shell: cmd
         working-directory: ci/win
@@ -328,7 +366,7 @@ jobs:
           organization-id: ${{ secrets.SIGNPATH_ORGANIZATION_ID }}
           project-slug: 'yacreader'
           signing-policy-slug: 'release-signing'
-          artifact-configuration-slug: 'windows-installer'
+          artifact-configuration-slug: 'zipped-files'
           github-artifact-id: ${{ steps.upload_unsigned.outputs.artifact-id }}
           wait-for-completion: true
           output-artifact-directory: ci/win/Output/signed
@@ -421,6 +459,44 @@ jobs:
           set PATH=C:\Qt\6.3.1\msvc2019_64\bin;%PATH%
           nmake check TESTARGS="-maxwarnings 100000"
       
+      - name: Upload executables for signing
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        uses: actions/upload-artifact@v4
+        id: upload_executables
+        with:
+          name: windows-x64-qt6-executables-unsigned-${{ needs.initialization.outputs.build_number }}
+          path: |
+            release64/YACReader.exe
+            release64/YACReaderLibrary.exe
+            release64/YACReaderLibraryServer.exe
+      
+      - name: Sign executables with SignPath
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        uses: signpath/github-action-submit-signing-request@v1
+        with:
+          api-token: ${{ secrets.SIGNPATH_API_TOKEN }}
+          organization-id: ${{ secrets.SIGNPATH_ORGANIZATION_ID }}
+          project-slug: 'yacreader'
+          signing-policy-slug: 'release-signing'
+          artifact-configuration-slug: 'zipped-files'
+          github-artifact-id: ${{ steps.upload_executables.outputs.artifact-id }}
+          wait-for-completion: true
+          output-artifact-directory: release64/signed
+      
+      - name: Replace with signed executables
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        shell: pwsh
+        run: |
+          Write-Host "=== Replacing executables with signed versions ==="
+          Get-ChildItem -Path "release64/signed" -Filter "*.exe" | ForEach-Object {
+            $destPath = "release64/$($_.Name)"
+            Write-Host "Moving signed: $($_.Name) -> $destPath"
+            Move-Item -Path $_.FullName -Destination $destPath -Force
+            Write-Host "  Moved successfully"
+          }
+          Remove-Item -Path "release64/signed" -Recurse -Force -ErrorAction SilentlyContinue
+          Write-Host "Signed executables are ready for installer creation"
+      
       - name: Create installer
         shell: cmd
         working-directory: ci/win
@@ -454,7 +530,7 @@ jobs:
           organization-id: ${{ secrets.SIGNPATH_ORGANIZATION_ID }}
           project-slug: 'yacreader'
           signing-policy-slug: 'release-signing'
-          artifact-configuration-slug: 'windows-installer-qt6'
+          artifact-configuration-slug: 'zipped-files'
           github-artifact-id: ${{ steps.upload_unsigned.outputs.artifact-id }}
           wait-for-completion: true
           output-artifact-directory: ci/win/Output/signed
@@ -531,6 +607,44 @@ jobs:
           set PATH=C:\Qt\5.15.2\msvc2019\bin;%PATH%
           nmake check TESTARGS="-maxwarnings 100000"
       
+      - name: Upload executables for signing
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        uses: actions/upload-artifact@v4
+        id: upload_executables
+        with:
+          name: windows-x86-executables-unsigned-${{ needs.initialization.outputs.build_number }}
+          path: |
+            release/YACReader.exe
+            release/YACReaderLibrary.exe
+            release/YACReaderLibraryServer.exe
+      
+      - name: Sign executables with SignPath
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        uses: signpath/github-action-submit-signing-request@v1
+        with:
+          api-token: ${{ secrets.SIGNPATH_API_TOKEN }}
+          organization-id: ${{ secrets.SIGNPATH_ORGANIZATION_ID }}
+          project-slug: 'yacreader'
+          signing-policy-slug: 'release-signing'
+          artifact-configuration-slug: 'zipped-files'
+          github-artifact-id: ${{ steps.upload_executables.outputs.artifact-id }}
+          wait-for-completion: true
+          output-artifact-directory: release/signed
+      
+      - name: Replace with signed executables
+        if: github.repository == 'YACReader/yacreader' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop')
+        shell: pwsh
+        run: |
+          Write-Host "=== Replacing executables with signed versions ==="
+          Get-ChildItem -Path "release/signed" -Filter "*.exe" | ForEach-Object {
+            $destPath = "release/$($_.Name)"
+            Write-Host "Moving signed: $($_.Name) -> $destPath"
+            Move-Item -Path $_.FullName -Destination $destPath -Force
+            Write-Host "  Moved successfully"
+          }
+          Remove-Item -Path "release/signed" -Recurse -Force -ErrorAction SilentlyContinue
+          Write-Host "Signed executables are ready for installer creation"
+      
       - name: Create installer
         shell: cmd
         working-directory: ci/win
@@ -564,7 +678,7 @@ jobs:
           organization-id: ${{ secrets.SIGNPATH_ORGANIZATION_ID }}
           project-slug: 'yacreader'
           signing-policy-slug: 'release-signing'
-          artifact-configuration-slug: 'windows-installer-x86'
+          artifact-configuration-slug: 'zipped-files'
           github-artifact-id: ${{ steps.upload_unsigned.outputs.artifact-id }}
           wait-for-completion: true
           output-artifact-directory: ci/win/Output/signed
diff --git a/ci/win/build_installer.iss b/ci/win/build_installer.iss
index 350d2e8c..ef9880c5 100644
--- a/ci/win/build_installer.iss
+++ b/ci/win/build_installer.iss
@@ -15,6 +15,7 @@ SetupIconFile=setup.ico
 UninstallDisplayIcon=uninstall.ico
 ArchitecturesInstallIn64BitMode=x64
 ArchitecturesAllowed=x64
+SignTool=custom_signtool
 
 [Registry]
 Root: HKCR; SubKey: .cbz; ValueType: string; ValueData: Comic Book (zip); Flags: uninsdeletekey; Tasks: File_association
diff --git a/ci/win/build_installer_qt6.iss b/ci/win/build_installer_qt6.iss
index 7f6bb39b..263c12a3 100644
--- a/ci/win/build_installer_qt6.iss
+++ b/ci/win/build_installer_qt6.iss
@@ -15,6 +15,7 @@ SetupIconFile=setup.ico
 UninstallDisplayIcon=uninstall.ico
 ArchitecturesInstallIn64BitMode=x64
 ArchitecturesAllowed=x64
+SignTool=custom_signtool
 
 [Registry]
 Root: HKCR; SubKey: .cbz; ValueType: string; ValueData: Comic Book (zip); Flags: uninsdeletekey; Tasks: File_association
diff --git a/ci/win/create_installer.cmd b/ci/win/create_installer.cmd
index 65025292..fe94d3f8 100644
--- a/ci/win/create_installer.cmd
+++ b/ci/win/create_installer.cmd
@@ -59,9 +59,9 @@ if "%1"=="x86" (
 
 echo "iscc start"
 if "%4"=="qt6" (
-	iscc /DVERSION=%VERSION% /DPLATFORM=%1 /DCOMPRESSED_ARCHIVE_BACKEND=%2 /DBUILD_NUMBER=%3 build_installer_qt6.iss || exit /b
+	iscc /DVERSION=%VERSION% /DPLATFORM=%1 /DCOMPRESSED_ARCHIVE_BACKEND=%2 /DBUILD_NUMBER=%3 /Scustom_signtool="powershell.exe -ExecutionPolicy Bypass -File sign_tool.ps1 $f" build_installer_qt6.iss || exit /b
 ) else (
-	iscc /DVERSION=%VERSION% /DPLATFORM=%1 /DCOMPRESSED_ARCHIVE_BACKEND=%2 /DBUILD_NUMBER=%3 build_installer.iss || exit /b
+	iscc /DVERSION=%VERSION% /DPLATFORM=%1 /DCOMPRESSED_ARCHIVE_BACKEND=%2 /DBUILD_NUMBER=%3 /Scustom_signtool="powershell.exe -ExecutionPolicy Bypass -File sign_tool.ps1 $f" build_installer.iss || exit /b
 )
 echo "iscc done!"
 
diff --git a/ci/win/sign_tool.ps1 b/ci/win/sign_tool.ps1
new file mode 100644
index 00000000..b3e634c0
--- /dev/null
+++ b/ci/win/sign_tool.ps1
@@ -0,0 +1,181 @@
+# PowerShell script for signing uninstaller during Inno Setup process
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$FilePath
+)
+
+# Get the filename from the full path
+$fileName = Split-Path $FilePath -Leaf
+Write-Host "SignTool called for file: $fileName"
+Write-Host "Full file path: $FilePath"
+
+# Validate the file exists
+if (-not (Test-Path $FilePath)) {
+    Write-Error "File not found: $FilePath"
+    exit 1
+}
+
+# Only sign the uninstaller - all other executables are pre-signed
+if ($fileName -eq "unins000.exe") {
+    Write-Host "Signing uninstaller: $fileName"
+    
+    # Check if we're in a CI environment (GitHub Actions)
+    $isCI = $env:GITHUB_ACTIONS -eq "true"
+    
+    if ($isCI) {
+        Write-Host "Running in CI environment - calling SignPath API"
+        Write-Host "File path: $FilePath"
+        Write-Host "File size: $((Get-Item $FilePath).Length) bytes"
+        
+        # Get required environment variables (these should be set as GitHub secrets)
+        $organizationId = $env:SIGNPATH_ORGANIZATION_ID
+        $projectSlug = $env:SIGNPATH_PROJECT_SLUG  
+        $signingPolicySlug = $env:SIGNPATH_SIGNING_POLICY_SLUG
+        $apiToken = $env:SIGNPATH_API_TOKEN
+        
+        # Validate required environment variables are set
+        if (-not $organizationId) { 
+            Write-Error "SIGNPATH_ORGANIZATION_ID environment variable not set"
+            exit 1
+        }
+        if (-not $projectSlug) { 
+            Write-Error "SIGNPATH_PROJECT_SLUG environment variable not set" 
+            exit 1
+        }
+        if (-not $signingPolicySlug) { 
+            Write-Error "SIGNPATH_SIGNING_POLICY_SLUG environment variable not set"
+            exit 1 
+        }
+        if (-not $apiToken) { 
+            Write-Error "SIGNPATH_API_TOKEN environment variable not set"
+            exit 1
+        }
+        
+        # Initialize temp directory variable for proper cleanup
+        $tempDir = $null
+        
+        try {
+            # Create a temporary directory for the signing process
+            $tempDir = New-Item -ItemType Directory -Path (Join-Path $env:TEMP "signpath_$(Get-Random)") -Force
+            $tempFile = Join-Path $tempDir "unins000.exe"
+            
+            Write-Host "Created temp directory: $tempDir"
+            
+            # Copy file to temp location with error handling
+            Copy-Item $FilePath $tempFile -Force
+            Write-Host "Copied file to temp location: $tempFile"
+            Write-Host "Copied file to temp location: $tempFile"
+            
+            Write-Host "Uploading uninstaller to SignPath for signing..."
+            
+            # Create the API request
+            $uri = "https://app.signpath.io/api/v1/$organizationId/SigningRequests"
+            
+            # Prepare the form data
+            $form = @{
+                'ProjectSlug' = $projectSlug
+                'SigningPolicySlug' = $signingPolicySlug
+                'ArtifactConfigurationSlug' = 'executable-file'
+                'Description' = "Signing uninstaller for YACReader build $(Get-Date -Format 'yyyy-MM-dd HH:mm')"
+            }
+            
+            # Prepare headers (API token should never be logged)
+            $headers = @{
+                'Authorization' = "Bearer $apiToken"
+            }
+            
+            # Upload and sign with error handling
+            Write-Host "Submitting signing request..."
+            $response = Invoke-RestMethod -Uri $uri -Method Post -Form $form -InFile $tempFile -Headers $headers
+            
+            # Validate response has required fields
+            if (-not $response.signingRequestId) {
+                Write-Error "SignPath API response missing signingRequestId field"
+                exit 1
+            }
+            
+            $signingRequestId = $response.signingRequestId
+            Write-Host "Signing request submitted with ID: $signingRequestId"
+            
+            # Poll for completion
+            $statusUri = "https://app.signpath.io/api/v1/$organizationId/SigningRequests/$signingRequestId"
+            $maxWaitTime = 300 # 5 minutes max
+            $waitTime = 0
+            $pollInterval = 10
+            
+            do {
+                Start-Sleep $pollInterval
+                $waitTime += $pollInterval
+                
+                Write-Host "Checking signing status... ($waitTime/$maxWaitTime seconds)"
+                $status = Invoke-RestMethod -Uri $statusUri -Headers $headers
+                
+                # Validate status response
+                if (-not $status.status) {
+                    Write-Error "SignPath status response missing status field"
+                    exit 1
+                }
+                
+                if ($status.status -eq "Completed") {
+                    Write-Host "Signing completed successfully!"
+                    break
+                } elseif ($status.status -eq "Failed") {
+                    $description = if ($status.description) { $status.description } else { "Unknown error" }
+                    Write-Error "Signing failed: $description"
+                    exit 1
+                } elseif ($status.status -eq "Denied") {
+                    $description = if ($status.description) { $status.description } else { "Request denied" }
+                    Write-Error "Signing was denied: $description"
+                    exit 1
+                }
+                
+            } while ($waitTime -lt $maxWaitTime)
+            
+            if ($waitTime -ge $maxWaitTime) {
+                Write-Error "Signing timed out after $maxWaitTime seconds"
+                exit 1
+            }
+            
+            # Download the signed file
+            Write-Host "Downloading signed uninstaller..."
+            $downloadUri = "https://app.signpath.io/api/v1/$organizationId/SigningRequests/$signingRequestId/SignedArtifact"
+            
+            # Download to temp location first, then replace original
+            $signedTempFile = Join-Path $tempDir "unins000_signed.exe"
+            Invoke-RestMethod -Uri $downloadUri -Headers $headers -OutFile $signedTempFile
+            
+            # Verify the signed file exists and has content
+            if (-not (Test-Path $signedTempFile) -or (Get-Item $signedTempFile).Length -eq 0) {
+                Write-Error "Downloaded signed file is missing or empty"
+                exit 1
+            }
+            
+            # Replace the original file with the signed version
+            Copy-Item $signedTempFile $FilePath -Force
+            Write-Host "Uninstaller signed successfully and replaced at: $FilePath"
+            
+            # Clean up temp directory
+            Remove-Item $tempDir -Recurse -Force -ErrorAction SilentlyContinue
+            Write-Host "Cleaned up temporary files"
+            
+        } catch {
+            Write-Error "SignPath API call failed: $($_.Exception.Message)"
+            Write-Host "Error details: $($_.Exception.ToString())"
+            
+            # Clean up temp directory on error
+            if ($tempDir -and (Test-Path $tempDir)) {
+                Remove-Item $tempDir -Recurse -Force -ErrorAction SilentlyContinue
+                Write-Host "Cleaned up temp directory after error"
+            }
+            exit 1
+        }
+        
+    } else {
+        Write-Host "Running locally - skipping uninstaller signing"
+        Write-Host "Set GITHUB_ACTIONS=true to enable SignPath integration"
+        exit 0
+    }
+} else {
+    Write-Host "Skipping file: $fileName (not the uninstaller)"
+    exit 0
+}
\ No newline at end of file