diff --git a/src/function/sync/get-server-data-status/index.ts b/src/function/sync/get-server-data-status/index.ts
index 2e720a4..e8bb2cb 100644
--- a/src/function/sync/get-server-data-status/index.ts
+++ b/src/function/sync/get-server-data-status/index.ts
@@ -1,6 +1,6 @@
 /*
  * server component for the TimeLimit App
- * Copyright (C) 2019 - 2020 Jonas Lochmann
+ * Copyright (C) 2019 - 2022 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -43,7 +43,8 @@ export const generateServerDataStatus = async ({ database, clientStatus, familyI
     fullVersion: config.alwaysPro ? 1 : (
       familyEntry.hasFullVersion ? parseInt(familyEntry.fullVersionUntil, 10) : 0
     ),
-    message: await getStatusMessage({ database, transaction }) || undefined
+    message: await getStatusMessage({ database, transaction }) || undefined,
+    apiLevel: 1
   }
 
   if (familyEntry.deviceListVersion !== clientStatus.devices) {
diff --git a/src/object/serverdatastatus.ts b/src/object/serverdatastatus.ts
index 334456c..f1fda56 100644
--- a/src/object/serverdatastatus.ts
+++ b/src/object/serverdatastatus.ts
@@ -1,6 +1,6 @@
 /*
  * server component for the TimeLimit App
- * Copyright (C) 2019 - 2021 Jonas Lochmann
+ * Copyright (C) 2019 - 2022 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -33,6 +33,7 @@ export interface ServerDataStatus {
   users?: ServerUserList  // newUserList
   fullVersion: number     // fullVersionUntil
   message?: string
+  apiLevel: number
 }
 
 export interface ServerDeviceList {