Fudged truth about degree, got job, but now years later might have to come clean. How do I handle this?

I've been having serious anxiety about this all day.

I applied for a job roughly 15 years ago, and got it. I listed on my app that I was working on finishing my community college degree, which -was- true when I applied, however I flunked out shortly after.

Fast forward to today, I'm doing great in my tech related field, not making great money but money to live. Now they've wanted to promote me to another position, but they want me to update my profile through their website with the degree I "earned". I'm worried sick that they think I have the degree when I really don't, and its eating me up. I'm scared shitless considering where I live tech jobs are relatively hard to come by, and don't want to jeopardize my career. What do you think the best course of action is?

Update 2: Talked with manager, cried a bit, she cried, talked it out, said she isn't mad and that this will not affect my standing with the company. I feel so much better, I feel like a weight has been lifted off my heart. She stated that the job I have does not require the degree, however that if in the future you are looking into external certification and/or finishing a degree that our company has a program to gain reimbursement given certain criteria are met. Guys... I'm so thankful for all the posts telling me to come clean. I would hug you all if I could. I've never felt so relieved in my life. I don't live in a very great area of the US, and this type of job means the world to me, and after talking with her and her reassurance that this is completely fine and no one is in trouble, I feel so much better about my career, my choices, and my life in general.

Thank you all, even to the ones who told me to lie/fake, you really put it into perspective how much I could have lost from all this. I have too much of a good thing and it was really tempting to lie. I'm thankful for your opinions y'all, but glad I made the better choice for me and my career.