Karen Golinski, a federal employee, has won health-care coverage for her wife, Amy Cunninghis.

Gay rights advocates believe this is the first time the federal government has extended such benefits to a gay worker, The Washington Post reported.

In a March 9 letter to Blue Cross Blue Shield, the Office of Personnel Management (OPM) said that “OPM hereby withdraws any outstanding directive regarding the enrollment of Ms. Golinski's wife, Amy C. Cunninghis, in her family health benefits plans.” The letter was signed by Shirley Patterson, assistant director of federal employees insurance operations for OPM.

OPM previously argued that the Defense of Marriage Act (DOMA) blocked such coverage.

In February, U.S. District Judge Jeffrey S. White found Section 3 of DOMA, which bars the federal government from recognizing the legal marriages of gay couples, in violation of the equal protection rights of such couples.

“We're thrilled for Karen and Amy, who have been waiting for years for this equal treatment,” Tara Borelli, a lawyer with Lambda Legal, which represents Golinski, told the paper.

While House Republicans have appealed the decision, they have yet to request a stay in White's ruling pending the appeal.

(Related: Both sides criticize John Boehner over defense of gay marriage ban DOMA.)