Need advice regarding short stint

Asking for an HR perspective to help with this one. I didn't mention a short stint( around 2 months) in my resume which I did almost 3 years back and I've gotten offer letter from another company. Should I disclose this in my background verification form or just continue not to list it. Its one thing to not include it in resume, not so sure about BGV form. The good part is the short stint didn't deposit PF so it does not reflect on my UAN number. Also the company is no longer in existence.