diff --git a/package.json b/package.json
index 2653dd3429..2974ce86fc 100644
--- a/package.json
+++ b/package.json
@@ -610,6 +610,11 @@
                 "type": "string",
                 "description": "The custom pipe name of the PowerShell host process to attach to.",
                 "default": null
+              },
+              "notifyOnAttach": {
+                "type": "boolean",
+                "description": "Creates the event 'PSES.Attached' when the debugger attaches to the PowerShell host process. This is useful when creating a script that waits for the debugger to attach.",
+                "default": false
               }
             }
           }