An Amazon warehouse on New York’s Staten Island became the first in the country to vote in favor of unionizing, a major blow for the retail and e-commerce giant.

The facility, known as JFK8, employs roughly 6,000 workers. Results announced Friday showed that they voted 2,654 to 2,131, with some votes still outstanding, to organize. The win must now be formalized by the National Labor Relations Board, which will certify the results.