Conor McGregor is apologizing to his fans after his whiskey, Proper No. 12, sold out too fast.

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The booze prematurely sold out what was meant to be a six-month supply.

“I don’t usually see reason to apologize,” said the MMA champ, adding “we are producing hundreds of thousands of bottles now” to restock shelves in December.

A source said that means “a couple million bottles” will be headed to the US and Ireland early next month for McGregor’s thirsty fans.

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The Post had previously reported that McGregor recently surprised a group of Boston firefighters with bottles of the whiskey and World Series tickets.

This article originally appeared on The New York Post.