The singer's 22-month-old son Noah was taken to hospital in Argentina in June with local media reporting he'd suffered serious burns in an accident.
No further details were revealed.
But Michael has now reassured that little Noah is okay.
He wrote on Instagram: "We want to thank you for the love and concern you have shown for our little guy through this difficult time. I'm happy to report that he is home, happy and healthy on what turned out to be a great Canada day. #love #grateful #family."
Michael accompanied his message with an image showing three sets of footprints in the sand: his, his wife Luisana Lopilato's and those of Noah.
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