Although a credit limit increase is generally good for your credit, requesting one could temporarily ding your score. That's because credit card issuers will sometimes perform a hard pull on your credit to verify you meet their standards for the higher limit.

For more information, see the following:

How to Increase Your Credit Limit (Without Harming Your Score)

https://creditcards.usnews.com/articles/how-to-increase-your-credit-limit-without-harming-your-score...