diff --git a/EnvelopeGenerator.API/Controllers/ConfigController.cs b/EnvelopeGenerator.API/Controllers/ConfigController.cs
index d2f758ea..81aa23c0 100644
--- a/EnvelopeGenerator.API/Controllers/ConfigController.cs
+++ b/EnvelopeGenerator.API/Controllers/ConfigController.cs
@@ -22,6 +22,7 @@ public class ConfigController(IOptionsMonitor<AnnotationParams> annotationParams
     /// Returns annotation configuration that was previously rendered by MVC.
     /// </summary>
     [HttpGet("Annotations")]
+    [Obsolete("PSPDF Kit will no longer be used.")]
     public IActionResult GetAnnotationParams()
     {
         return Ok(_annotationParams.AnnotationJSObject);