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+## Api version
+[Back to the navigation](README.md)
+
+If you want to change the API version from its default ("v3") you may do that with a constructor argument.
+For example:
+
+```php
+$client = new Github\Client();
+echo $client->getApiVersion(); // prints "v3"
+
+$client = new Github\Client($httpClient, 'v2');
+echo $client->getApiVersion(); // prints "v2"
+```