MadelineProtoDocs/old_docs/API_docs_v91/methods/help_getAppChangelog.md

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---
title: help.getAppChangelog
description: Get the changelog of this app
image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
---
# Method: help.getAppChangelog
[Back to methods index](index.md)
Get the changelog of this app
### Parameters:
| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|prev\_app\_version|[string](../types/string.md) | Previous app version | Yes|
### Return type: [Updates](../types/Updates.md)
### Can bots use this method: **NO**
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### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
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```php
if (!file_exists('madeline.php')) {
copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';
$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();
$Updates = $MadelineProto->help->getAppChangelog(['prev_app_version' => 'string', ]);
```
Or, if you're into Lua:
```lua
Updates = help.getAppChangelog({prev_app_version='string', })
```