diff --git a/diagnostic/server.js b/diagnostic/server.js
index 067f894..cddc5ed 100644
--- a/diagnostic/server.js
+++ b/diagnostic/server.js
@@ -376,7 +376,7 @@ function sendToGateway(text, isPipeline) {
     id: reqId,
     method: "chat.send",
     params: {
-      sessionKey: "aria-diagnostic",
+      sessionKey: "aria-diag-v2",
       message: text,
       idempotencyKey: crypto.randomUUID(),
     },