Tesla and SpaceX CEO Elon Musk has changed his Twitter bio to mention only Bitcoin.
The move is the same as by Twitter CEO Jack Dorsey, who has since long been a bitcoin supporter.
The bitcoin mention by Musk means his more than 43 million followers could be keen to learn more about the world's largest cryptocurrency.
Soon after changing the bio, Musk tweeted: "In retrospect, it was inevitable," possibly meaning that the bitcoin mention was sure to happen.
Bitcoin shot up by about 13% within minutes since the tweet. The cryptocurrency is currently trading at around $36,500.
Last month, Musk inquired about converting "large transactions" of Tesla's balance sheet into bitcoin in a Twitter exchange with Microstrategy CEO Michael Saylor.
Saylor at the time encouraged Musk to shift cash from Tesla to bitcoin and "do your shareholders a $100 billion favor." The exchange came after Musk posted a suggestive image indicating that he's tempted by bitcoin.
Shortly after that exchange, Musk wrote in a separate tweet at the time: "Bitcoin is my safe word."
Musk, the world's richest man, has previously tweeted about Dogecoin several times. The price of Dogecoin recently hit a new all-time high above $0.02.