diff --git a/launcher/tiny11options.Launcher.csproj b/launcher/tiny11options.Launcher.csproj
index 342aec7..8a799c3 100644
--- a/launcher/tiny11options.Launcher.csproj
+++ b/launcher/tiny11options.Launcher.csproj
@@ -110,10 +110,11 @@
     <!-- Microsoft.Web.WebView2 brings Core + Wpf managed wrappers + the
          native WebView2Loader.dll runtime asset. NuGet handles all three;
          MSBuild copies WebView2Loader.dll to the output dir automatically
-         via the package's build/native targets. Pinned to the exact same
-         version (1.0.2535.41) that was previously vendored under
-         dependencies/webview2/. Bumping is a routine Dependabot PR. -->
-    <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.2535.41" />
+         via the package's build/native targets. This <PackageReference> is the
+         SINGLE SOURCE OF TRUTH for the WebView2 version: src/Tiny11.WebView2.psm1
+         resolves the SDK path from it (Get-Tiny11WebView2Version), so a routine
+         Dependabot bump flows through with no second edit. -->
+    <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.4078.44" />
     <PackageReference Include="Velopack" Version="1.2.0" />
   </ItemGroup>
 
diff --git a/src/Tiny11.WebView2.psm1 b/src/Tiny11.WebView2.psm1
index 6cb982f..224a3c6 100644
--- a/src/Tiny11.WebView2.psm1
+++ b/src/Tiny11.WebView2.psm1
@@ -1,7 +1,5 @@
 Set-StrictMode -Version Latest
 
-$PinnedVersion = '1.0.2535.41'
-
 # Minimum sizes must match the XAML MinWidth/MinHeight below; clamping prevents loading a
 # stale settings.json from a previous build whose minimums were smaller.
 $script:MinWindowWidth  = 1000
@@ -33,18 +31,40 @@ function Save-Tiny11UserSettings {
     [System.IO.File]::WriteAllText($path, $json, [System.Text.UTF8Encoding]::new($false))
 }
 
+function Get-Tiny11WebView2Version {
+    # The launcher csproj's <PackageReference> is the single source of truth for the
+    # WebView2 version. Reading it here (instead of hardcoding a copy) means a routine
+    # Dependabot bump to the csproj flows through automatically -- the SDK-path
+    # resolution below follows it with no second edit, so the two never drift.
+    [CmdletBinding()]
+    param([string]$CsprojPath)
+    if (-not $CsprojPath) {
+        $CsprojPath = Join-Path $PSScriptRoot '..\launcher\tiny11options.Launcher.csproj'
+    }
+    if (-not (Test-Path $CsprojPath)) {
+        throw "Cannot resolve the WebView2 version: launcher csproj not found at $CsprojPath."
+    }
+    $content = Get-Content -Path $CsprojPath -Raw
+    if ($content -match '<PackageReference\s+Include="Microsoft\.Web\.WebView2"\s+Version="([^"]+)"') {
+        return $Matches[1]
+    }
+    throw "Cannot resolve the WebView2 version: no Microsoft.Web.WebView2 <PackageReference> in $CsprojPath."
+}
+
 function Get-Tiny11WebView2SdkPath {
     [CmdletBinding()]
-    param([string]$NugetPackagesRoot)
+    param([string]$NugetPackagesRoot, [string]$Version)
     # Resolve the NuGet global packages folder. NUGET_PACKAGES env var overrides
     # the default per Microsoft's NuGet docs on global-packages-and-cache-folders.
     if (-not $NugetPackagesRoot) {
         $NugetPackagesRoot = if ($env:NUGET_PACKAGES) { $env:NUGET_PACKAGES } else { Join-Path $env:USERPROFILE '.nuget\packages' }
     }
+    # Version tracks the csproj (single source of truth) unless the caller overrides it.
+    if (-not $Version) { $Version = Get-Tiny11WebView2Version }
     # NuGet caches as <root>\<id-lowercased>\<version>\... -- package id is lowercased on disk.
     # Managed wrappers live under lib\<tfm>\; net462 is the right TFM for PowerShell 5.1
     # (.NET Framework 4.x WPF host). Native loader lives under runtimes\win-x64\native\.
-    $pkgDir = Join-Path $NugetPackagesRoot "microsoft.web.webview2\$PinnedVersion"
+    $pkgDir = Join-Path $NugetPackagesRoot "microsoft.web.webview2\$Version"
     [pscustomobject]@{
         VersionDir = $pkgDir
         CoreDll    = Join-Path $pkgDir 'lib\net462\Microsoft.Web.WebView2.Core.dll'
@@ -193,4 +213,4 @@ function Show-Tiny11Wizard {
     [void]$window.ShowDialog()
 }
 
-Export-ModuleMember -Function Get-Tiny11WebView2SdkPath, Test-Tiny11WebView2SdkPresent, Test-Tiny11WebView2RuntimeInstalled, Show-Tiny11Wizard, Set-Tiny11WizardWindow, Get-Tiny11WizardWindow, Get-Tiny11WizardWebView, Get-Tiny11UserSettingsPath, Get-Tiny11UserSettings, Save-Tiny11UserSettings
+Export-ModuleMember -Function Get-Tiny11WebView2Version, Get-Tiny11WebView2SdkPath, Test-Tiny11WebView2SdkPresent, Test-Tiny11WebView2RuntimeInstalled, Show-Tiny11Wizard, Set-Tiny11WizardWindow, Get-Tiny11WizardWindow, Get-Tiny11WizardWebView, Get-Tiny11UserSettingsPath, Get-Tiny11UserSettings, Save-Tiny11UserSettings
diff --git a/tests/Tiny11.WebView2.Tests.ps1 b/tests/Tiny11.WebView2.Tests.ps1
index c17fa33..e7f5211 100644
--- a/tests/Tiny11.WebView2.Tests.ps1
+++ b/tests/Tiny11.WebView2.Tests.ps1
@@ -2,19 +2,52 @@ Set-StrictMode -Version 3.0
 Import-Module "$PSScriptRoot/Tiny11.TestHelpers.psm1" -Force
 Import-Tiny11Module -Name 'Tiny11.WebView2'
 
+BeforeAll {
+    # The WebView2 version is sourced from the launcher csproj (single source of
+    # truth); derive the expected value the same way so these tests never hardcode a
+    # version that drifts when Dependabot bumps the csproj.
+    $script:ver = Get-Tiny11WebView2Version
+}
+
+Describe "Get-Tiny11WebView2Version" {
+    It "reads the Microsoft.Web.WebView2 version from the launcher csproj" {
+        $script:ver | Should -Match '^\d+\.\d+\.\d+\.\d+$'
+    }
+    It "honors an explicit -CsprojPath override" {
+        $tmp = New-TempScratchDir
+        try {
+            $csproj = Join-Path $tmp 'x.csproj'
+            Set-Content -Path $csproj -Value '<Project><ItemGroup><PackageReference Include="Microsoft.Web.WebView2" Version="9.9.9.9" /></ItemGroup></Project>'
+            Get-Tiny11WebView2Version -CsprojPath $csproj | Should -Be '9.9.9.9'
+        } finally {
+            Remove-TempScratchDir -Path $tmp
+        }
+    }
+    It "throws when the csproj has no WebView2 PackageReference" {
+        $tmp = New-TempScratchDir
+        try {
+            $csproj = Join-Path $tmp 'x.csproj'
+            Set-Content -Path $csproj -Value '<Project></Project>'
+            { Get-Tiny11WebView2Version -CsprojPath $csproj } | Should -Throw -ExpectedMessage '*no Microsoft.Web.WebView2*'
+        } finally {
+            Remove-TempScratchDir -Path $tmp
+        }
+    }
+}
+
 Describe "Get-Tiny11WebView2SdkPath" {
     It "returns paths under the NuGet packages cache for microsoft.web.webview2/<version>" {
         $r = Get-Tiny11WebView2SdkPath
         $r.CoreDll   | Should -Match 'lib[\\/]net462[\\/]Microsoft\.Web\.WebView2\.Core\.dll$'
         $r.WpfDll    | Should -Match 'lib[\\/]net462[\\/]Microsoft\.Web\.WebView2\.Wpf\.dll$'
         $r.NativeDll | Should -Match 'runtimes[\\/]win-x64[\\/]native[\\/]WebView2Loader\.dll$'
-        $r.VersionDir | Should -Match 'microsoft\.web\.webview2[\\/]1\.0\.2535\.41$'
+        $r.VersionDir | Should -Match "microsoft\.web\.webview2[\\/]$([regex]::Escape($script:ver))$"
     }
     It "honors -NugetPackagesRoot override" {
         $tmp = New-TempScratchDir
         try {
             $r = Get-Tiny11WebView2SdkPath -NugetPackagesRoot $tmp
-            $r.CoreDll | Should -BeLike "$tmp*microsoft.web.webview2*1.0.2535.41*lib*net462*Microsoft.Web.WebView2.Core.dll"
+            $r.CoreDll | Should -BeLike "$tmp*microsoft.web.webview2*$script:ver*lib*net462*Microsoft.Web.WebView2.Core.dll"
         } finally {
             Remove-TempScratchDir -Path $tmp
         }
@@ -25,20 +58,24 @@ Describe "Get-Tiny11WebView2SdkPath" {
         try {
             $env:NUGET_PACKAGES = $tmp
             $r = Get-Tiny11WebView2SdkPath
-            $r.CoreDll | Should -BeLike "$tmp*microsoft.web.webview2*1.0.2535.41*lib*net462*Microsoft.Web.WebView2.Core.dll"
+            $r.CoreDll | Should -BeLike "$tmp*microsoft.web.webview2*$script:ver*lib*net462*Microsoft.Web.WebView2.Core.dll"
         } finally {
             $env:NUGET_PACKAGES = $original
             Remove-TempScratchDir -Path $tmp
         }
     }
+    It "honors an explicit -Version override" {
+        $r = Get-Tiny11WebView2SdkPath -NugetPackagesRoot 'C:\pkgs' -Version '1.2.3.4'
+        $r.VersionDir | Should -BeLike '*microsoft.web.webview2*1.2.3.4'
+    }
 }
 
 Describe "Test-Tiny11WebView2SdkPresent" {
     It "returns paths object when all 3 DLLs present" {
         $tmp = New-TempScratchDir
         try {
-            $libDir    = Join-Path $tmp 'microsoft.web.webview2\1.0.2535.41\lib\net462'
-            $nativeDir = Join-Path $tmp 'microsoft.web.webview2\1.0.2535.41\runtimes\win-x64\native'
+            $libDir    = Join-Path $tmp "microsoft.web.webview2\$script:ver\lib\net462"
+            $nativeDir = Join-Path $tmp "microsoft.web.webview2\$script:ver\runtimes\win-x64\native"
             New-Item -ItemType Directory -Force -Path $libDir    | Out-Null
             New-Item -ItemType Directory -Force -Path $nativeDir | Out-Null
             New-Item -ItemType File -Path (Join-Path $libDir    'Microsoft.Web.WebView2.Core.dll') -Force | Out-Null
@@ -71,7 +108,7 @@ Describe "Test-Tiny11WebView2SdkPresent" {
     It "throws when only some DLLs are present" {
         $tmp = New-TempScratchDir
         try {
-            $libDir = Join-Path $tmp 'microsoft.web.webview2\1.0.2535.41\lib\net462'
+            $libDir = Join-Path $tmp "microsoft.web.webview2\$script:ver\lib\net462"
             New-Item -ItemType Directory -Force -Path $libDir | Out-Null
             New-Item -ItemType File -Path (Join-Path $libDir 'Microsoft.Web.WebView2.Core.dll') -Force | Out-Null
             { Test-Tiny11WebView2SdkPresent -NugetPackagesRoot $tmp } | Should -Throw -ExpectedMessage '*WebView2 SDK DLL missing*'