Follow “Help” -> “Update” to check for update. You are suggested to read through Tips for Updating Pavtube MKV Converter.
By default you'll be reminded to update the software to the latest version whenever a new version is released. The update is free of charge. To update Pavtube MKV Converter automatically, please check for details in Option Configuration. Pavtube support team is always ready to help you out. Any trouble you have when updating the software, please email us.