Upgrading PostgreSQL from v8.4.14 to v9.3.5

[Ashish Yadav <ashish.yadav@xxxxxxxxxxx>]

Hi,

I am currently running a stand alone PostgreSQL v8.4.14 on a Linux CentOS server and need to perform an upgrade. 

Can I upgrade to the latest PostgreSQL v9.3.5 or do I need to perform an intermediate upgrade?

Current:

psql (PostgreSQL) 8.4.14

java version "1.6.0_37"

Java(TM) SE Runtime Environment (build 1.6.0_37-b06)

Java HotSpot(TM) 64-Bit Server VM (build 20.12-b01, mixed mode)

Linux 2.6.18-371.4.1.el5 x86_64

Thanks,

Ashish.