About the new day-time saving rule

Hi,

I’m just wondering that does postgres have a time zone updater for the new day time saving rule like java has? (http://java.sun.com/javase/tzupdater_README.html). Or do I need to change the time manually myself? If that is the case, if the time changes again sometime in September then I would need to manually change it myself again? Please advice when you get a chance.

Thank you in advance,

Michael