<prompt> Human: Has this happened to anyone else? I received an email this morning stating:sbwt,Congratulations! Because youve used your card responsibly, youve been upgraded to an unsecured Capital One Platinum Mastercard. Go, you!This took me completely by surprise as Ive always read that Capital One does NOT convert secured to unsecured cards and theyve repeatedly denied my credit limit increases for the past year or so. I have had this card since June 2015 and have been stuck at a 600 credit limit for the past 14ish? months. Id actually been thinking of closing the card since I now have a Quicksilver card with CO that I use as my main card and the previously secured card just had one bill on it that I immediately pay off each month. Since this is my first post, Id also like to take a second to thank rpersonalfinance! New account but Ive been lurking here for well over a year and in that time have taken MANY steps to improve my credit financial independence thanks to all of the information tips I have read here. EDIT: I checked my account and the deposit has already been credited back! Assistant: First, congratulations. Even if the secured to unsecured card action was automatic, that still means one year of responsible credit use, so good on you. I wouldnt close this card. As others have noted, its probably one of if not the oldest lines of credit you have, and closing would negatively impact the age of your accounts. I wouldnt even request a credit limit increase. I think youre doing exactly what you should be doing with the cardput a single bill on it, and pay it off each month. Look for other opportunities with cards that have better rewards, or just stick with what you have right now. Human: Thank you! It has been an uphill battle so even small victories like this mean a lot to me. Youre right this is my oldest account. I will keep it open so as not to negatively affect my AAOA.  <response>: Great! Just remember to put a bill on it and pay it off every monthif the card is inactive sometimes the creditor will eventually close it automatically. Keep on keeping on, and good luck! 