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Demi Lovato spent July 4 nursing a swollen ankle after she injured herself while exercising.

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The "Heart Attack" hitmaker was housebound on Independence Day after she twisted her ankle while running.

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Lovato posted an image of her feet, showing one ankle looking considerably larger than the other, and added, "Umm soooo ... I guess when I went running and twisted my ankle I actually did hurt myself... AGAIN. Hahaha."

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The singer, who ended up in a leg cast after slipping on a newly polished floor last year, assured fans it is just a minor injury this time around, adding, "Didn't even notice until now so it's not THAT bad but... I thought you'd be amused... I really should just get new ankles!!"