diff --git a/findmy/reports/account.py b/findmy/reports/account.py
index 5077549..8101d9e 100644
--- a/findmy/reports/account.py
+++ b/findmy/reports/account.py
@@ -979,7 +979,7 @@ async def _gsa_request(self, parameters: dict[str, Any]) -> dict[str, Any]:
             "Content-Type": "text/x-xml-plist",
             "Accept": "*/*",
             "User-Agent": "akd/1.0 CFNetwork/978.0.7 Darwin/18.7.0",
-            "X-MMe-Client-Info": self._anisette.client,
+            "X-MMe-Client-Info": self._anisette.client_akd,
         }
 
         resp = await self._http.post(
diff --git a/findmy/reports/anisette.py b/findmy/reports/anisette.py
index 1c5e3e5..30d5ab1 100644
--- a/findmy/reports/anisette.py
+++ b/findmy/reports/anisette.py
@@ -125,6 +125,17 @@ def client(self) -> str:
             "<com.apple.AOSKit/282 (com.apple.dt.Xcode/3594.4.19)>"
         )
 
+    @property
+    def client_akd(self) -> str:
+        """
+        Client string identifying as ``akd``, the daemon that performs Grand Slam requests.
+
+        Same format and platform as :attr:`client`, differing only in the app bundle.
+        Apple's GSA endpoint refuses requests that identify as Xcode with an HTTP 503,
+        so this is the string to send alongside an ``akd`` user agent.
+        """
+        return "<MacBookPro18,3> <Mac OS X;13.4.1;22F8> <com.apple.AOSKit/282 (com.apple.akd/1.0)>"
+
     async def get_headers(
         self,
         user_id: str,