diff --git a/lobby-addon/lobby_transfer_BP/manifest.json b/lobby-addon/lobby_transfer_BP/manifest.json
index 46ce733..162ed48 100644
--- a/lobby-addon/lobby_transfer_BP/manifest.json
+++ b/lobby-addon/lobby_transfer_BP/manifest.json
@@ -26,6 +26,10 @@
       "module_name": "@minecraft/server",
       "version": "1.17.0"
     },
+    {
+      "module_name": "@minecraft/server-admin",
+      "version": "1.0.0-beta"
+    },
     {
       "uuid": "b2c3d4e5-1111-2222-3333-fedcba654321",
       "version": [1, 0, 0]
diff --git a/lobby-addon/lobby_transfer_BP/scripts/main.js b/lobby-addon/lobby_transfer_BP/scripts/main.js
index 308df34..c1aa86b 100644
--- a/lobby-addon/lobby_transfer_BP/scripts/main.js
+++ b/lobby-addon/lobby_transfer_BP/scripts/main.js
@@ -1,4 +1,5 @@
 import { world, system } from "@minecraft/server";
+import { transferPlayer } from "@minecraft/server-admin";
 
 // Portal block → transfer target mapping (custom blocks — priority detection)
 const PORTAL_BLOCKS = {
@@ -93,10 +94,10 @@ system.runInterval(() => {
     player.teleport(safePos);
 
     // Wait 5 ticks for position to save, then transfer.
-    // Player.transfer replaces the removed @minecraft/server-admin `transferPlayer`.
+    // transferPlayer from @minecraft/server-admin beta API — requires gametest experiment + permissions.json allows server-admin.
     system.runTimeout(() => {
       try {
-        player.transfer({ hostname: portal.host, port: portal.port });
+        transferPlayer(player, portal.host, portal.port);
       } catch (e) {
         player.sendMessage(`§cTransfer failed: ${e.message}`);
       }