My Theme won't stop upading

I’m able to get my theme to update, but right after I update it says there’s another update available. How do I make the notification go away?

Using this JSON code

{
  "version" : "1.0.1",
  "download_url" : "https://example.com/api/theme.zip",
  "details_url" : "https://example.com/api/index.html"
}

backticks
and this code in the functions.php

//Initialize the update checker.
require 'theme-updates/theme-update-checker.php';
$example_update_checker = new ThemeUpdateChecker(
    'PGStrap',
    'https://example.com/api/info.json'
);