Check out this article from Accountants Daily to understand what will happen when new GST laws are enacted from 1 July 2018. Ensure you advise your overseas suppliers your ABN and the status of your GST registration.
https://www.accountantsdaily.com.au/tax-compliance/11793-watch-out-for-charges-with-incoming-gst-laws-accountants-told?utm_source=Accountants%20Daily&utm_campaign=18_06_18&utm_medium=email&utm_content=3