Depending on when you made the change last year it is possible that it didn't happen early enough (since you owe so little) so if that is what happened you should be good for 2020 ... review your withholding to date between the 2019 pay stub and the 2020 stub.
If you are married and your spouse works and/or have more than one job at the same time then you need to work the new W-4 form carefully as it changed recently ... there are no more deductions like in the past ... you can also use the TT program to complete a new W-4 form to hand in. https://www.irs.gov/pub/irs-pdf/fw4.pdf
