I just released a game on Google Play but the name in the market isn't the name it installs with.

I started this project under one name and decided to change it. I thought whatever name it had on Google Play would be what the icon would be labeled as, but I've had no such luck. The name of the app under the icon is the old name and the new name is only found on the Google Play install page. How do I change the name more thoroughly?