Geoff Warburton , Scott Harris , Mendes , and Teddy Geiger wrote the song “ In My Blood ” .
It was released by Universal Music Group on March 22 , 2018 , as the lead single from Mendes ' upcoming third studio album. On March 16 , 2018 , Mendes first posted a collage on social media consisting of two uncaptioned images of blank color blocks , one in beige and one in coral .
In My Blood -LRB-Shawn Mendes song-RRB-