diff --git a/dotnet/src/QuickProtect.App/QuickProtect.App.csproj b/dotnet/src/QuickProtect.App/QuickProtect.App.csproj
index 8a504a7..d289313 100644
--- a/dotnet/src/QuickProtect.App/QuickProtect.App.csproj
+++ b/dotnet/src/QuickProtect.App/QuickProtect.App.csproj
@@ -22,7 +22,7 @@
     <PackageReference Include="Avalonia.Themes.Fluent" Version="12.1.2" />
     <PackageReference Include="Avalonia.Fonts.Inter" Version="12.1.2" />
     <!-- MVVM helpers (ObservableObject, RelayCommand) -->
-    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.3.2" />
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.2" />
     <!-- FFmpeg bindings for the custom video engine (demux + decode). The
          DynamicallyLoaded variant lets us point at per-RID native libraries. -->
     <PackageReference Include="FFmpeg.AutoGen.Abstractions" Version="9.0.1.1" />
diff --git a/dotnet/src/QuickProtect.App/packages.lock.json b/dotnet/src/QuickProtect.App/packages.lock.json
index 89dc57c..94cc5f4 100644
--- a/dotnet/src/QuickProtect.App/packages.lock.json
+++ b/dotnet/src/QuickProtect.App/packages.lock.json
@@ -47,9 +47,9 @@
       },
       "CommunityToolkit.Mvvm": {
         "type": "Direct",
-        "requested": "[8.3.2, )",
-        "resolved": "8.3.2",
-        "contentHash": "m8EolE1A0Updj68WTsZSGI6VWb6mUqHPh7QFo0kt7+JPhYMNXRS1ch8TS/oITAdcxTLrwMOp3ku1KjeG1/Zdpg=="
+        "requested": "[8.4.2, )",
+        "resolved": "8.4.2",
+        "contentHash": "WadCzGEc2U+3e20avRLng4qNtt4zoOGWrdUISqJWrHe3/FSnrYjuM5Sb4yQb09LhkBXrrI4Zt3dLKgRMbItsrg=="
       },
       "FFmpeg.AutoGen.Abstractions": {
         "type": "Direct",