The long-running BBC series Doctor Who is making history with its newest doctor, revealing that Jo Martin is the newest actor to play the titular character –marking the first time a black actor has been cast in the lead role. The big reveal came during Sunday night’s episode, titled “Fugitive of the Judoon.”

The Doctor Who Twitter account tweeted out a GIF of the moment of Martin’s reveal as the Doctor, adding “Who else was shook at THIS moment?!” Martin tweeted out a photo of herself wearing her Doctor’s garb, writing, “#NewProfilePic.”