The Yankees bullpen just racked up another K.

The reliever formerly known as Zach Britton announced Thursday he will now go by Zack Britton, his legal name.

Britton said in a tweet that Zach was his “stage name.”

“Breaking News: I will be going by my legal name “Zack” instead of my stage name “Zach”….. everyone continue to breath normally… #beenlivingalie #birthcertfail,” Britton tweeted.

The lefty re-signed with the Yankees on a three-year, $39 million deal in January to fortify a strong bullpen. He originally came to The Bronx last summer in a trade from the Orioles.