The Trump administration is proposing a legal definition of sex as male or female based on the genitals a person is born with, according to a report by The New York Times.

On Thursday, more than 50 companies — including the tech giants Apple, Google, Amazon — signed a letter opposing any actions by the administration to legally define sex as binary and assigned at birth.

"We believe no one should be discriminated against for being who they are," said Tia Silas, the vice president and global chief diversity and inclusion officer of IBM.

More companies are expected to sign the letter in the coming days.

The tech world has responded to a New York Times report saying the Trump administration is considering rolling back transgender rights.

On Thursday, more than 50 companies — including the tech giants Apple, Google, Amazon, Facebook, Twitter, Uber, and Airbnb — signed a letter opposing any actions by the administration to legally define sex as binary and assigned at birth, Axios reported.

The letter read, in part:

"We, the undersigned businesses, stand with the millions of people in America who identify as transgender, gender non-binary, or intersex, and call for all such people to be treated with the respect and dignity everyone deserves. We oppose any administrative and legislative efforts to erase transgender protections through reinterpretation of existing laws and regulations."

Read more: The Trump administration's reported proposal to make an 'unchangeable' definition of sex based on genitals isn't backed by science — here's why

Companies outside of tech, including Nike and Levi Strauss, signed the letter as well.

Francine Katsoudas, Cisco's executive vice president and chief people officer, said in a company blog post, "We must protect and advocate for the equality of transgender, intersex, and gender-expansive people inside and outside the workplace."

"We believe no one should be discriminated against for being who they are," said Tia Silas, IBM's vice president and global chief diversity and inclusion officer.

The 56 companies that signed the letter on Thursday employ nearly 4.8 million people, according to a press release, which said more companies are expected to sign in the coming days.