Oracle Instant Client Installation

We are using oracle version 10.2.0.2.0,

and have Database Client Library : OCI_102 (10.2.0.2.0) installed.

We are planning to upgrade oracle version 10.2.0.2.0 to Oracle patch set 10.2.0.5

I have seen sap 819829 - Oracle Instant Client Installation and Configuration on Unix

I want to know DO i need to upgrade the existing Oracle Instant Client? (Before starting the upgrade process?)

Or

Do i need to update the Oracle Instant Client after we have patched oracle version 10.2.0.2.0 to Oracle patch set 10.2.0.5.

Thanks