Step 1. Log in to your Porkbun account.
Step 2. Click on the "ACCOUNT" drop-down in the top right.
Step 3. Navigate to the "Domain Management" page.
Step 4. Navigate to the domain you would like to update the nameservers for.
Step 5. Click "Edit" under the "AUTHORITATIVE NAMESERVERS" section.
Step 6. Enter your new nameservers.