diff --git a/EnvelopeGenerator.ReceiverUI/Program.cs b/EnvelopeGenerator.ReceiverUI/Program.cs
index ccb2f292..d41f256e 100644
--- a/EnvelopeGenerator.ReceiverUI/Program.cs
+++ b/EnvelopeGenerator.ReceiverUI/Program.cs
@@ -21,6 +21,7 @@ builder.Services.AddScoped
();
builder.Services.AddScoped();
builder.Services.AddScoped();
builder.Services.AddScoped();
+builder.Services.AddSingleton();
builder.Services.AddDevExpressWebAssemblyBlazorReportViewer();
builder.Services.AddDevExpressWebAssemblyBlazorPdfViewer();
diff --git a/EnvelopeGenerator.ReceiverUI/Services/AppVersionService.cs b/EnvelopeGenerator.ReceiverUI/Services/AppVersionService.cs
new file mode 100644
index 00000000..596371fe
--- /dev/null
+++ b/EnvelopeGenerator.ReceiverUI/Services/AppVersionService.cs
@@ -0,0 +1,26 @@
+namespace EnvelopeGenerator.ReceiverUI.Services;
+
+///
+/// Provides application version for cache busting static assets.
+/// Version is automatically incremented on each build via AssemblyVersion.
+///
+public class AppVersionService
+{
+ ///
+ /// Current application version (e.g., "1.0.0.0")
+ ///
+ public string Version { get; }
+
+ public AppVersionService()
+ {
+ // Get version from assembly metadata
+ Version = typeof(AppVersionService).Assembly.GetName().Version?.ToString() ?? "1.0.0.0";
+ }
+
+ ///
+ /// Generates versioned URL for static assets (cache busting)
+ ///
+ /// Asset path (e.g., "css/envelope-viewer.css")
+ /// Versioned URL (e.g., "css/envelope-viewer.css?v=1.0.0.0")
+ public string GetVersionedUrl(string path) => $"{path}?v={Version}";
+}