The Tottenham Hotspur defender is understandably pleased.
Belgium won their qualifying group on the way to reaching Euro 2016, with confirmation coming after a 3-1 victory over Israel on Tuesday night.
And a happy Alderweireld took to Twitter after the Tottenham defender had joined in with the post-match national celebrations following the Israel win.
What an achievement eh?
But, as we all know, the FIFA world rankings have always been flawed and don't always give a proper take on things.
Belgium have been a talented footballing nation for a number of years now but will they ever actually achieve anything in a major tournament? Like England, the never seem to click when it matters - although we'll see if that changes during Euro 2016.
Apart from Jan Vertonghen erring for Andorra to score a penalty, it's been a good week for Tottenham's Belgian contingent and Alderweireld especially has been a huge part of his country's success. The 26-year-old has also not been too bad at all for Spurs so far this season...