After Acquired Spouse in T Visas?

Can I apply for a spouse after the T visa is approved? Is there an equivalent to the U Visa I-929?

The T visa does not have an exception for an after-acquired spouse. However, the USCIS Policy Manual at Vol. 3, Part B, Ch. 4.D.2 was updated in 2021 to reflect the decision in Medina Tovar v. Zuchowski, 982 F.3d 631 (9th Cir. 2020) which allows for principals who marry while their application is pending to apply for their spouse even if the relationship did not exist at the time of filing. 

For additional information, review ASISTA, CLINIC & ILRC’s Practice Alert Regarding Certain U and T After-Acquired Cases (June 11, 2021).