Cannot create users with '-' in email address

[gadg3ts]

I'm having to write some wrapper scripts for our user management and am trying to use your library.
Works fine as username@example.com but not user-name@example.com

PHP Fatal error: Uncaught exception 'HipChat\HipChat_Exception' with message 'HipChat API error: code=500, info=HTTP status code: 500, response={"error":{"code":500,"type":"Internal Server Error","message":"Unable to create user"}}, url=https://hipchat.example.com/v1/users/create' in /root/hipchat/hipchat-php/src/HipChat/HipChat.php:390
Stack trace:
#0 /root/hipchat/hipchat-php/src/HipChat/HipChat.php(442): HipChat\HipChat->curl_request('https://hipchat...', Array)
#1 /root/hipchat/hipchat-php/src/HipChat/HipChat.php(274): HipChat\HipChat->make_request('users/create', Array, 'POST')
#2 /root/hipchat/hipchat-php/manage_user.php(66): HipChat\HipChat->create_user('it-notice@examp...', 'A irworf', 'airwolf')
#3 {main}

thrown in /root/hipchat/hipchat-php/src/HipChat/HipChat.php on line 390