stuck at v1.5.3 of the SDK in eclipse

hi, is there a way to upgrade to 1.5.3 within eclipse? I tried check
for updates but it only finds up to 1.5.2, thx

Initializing AppEngine server
[WARN] ********************************************************
There is a new version of the SDK available.
-----------
Latest SDK:
Release: 1.5.3
Timestamp: Tue Jul 19 15:46:16 CDT 2011
API versions: [1.0]

-----------
Your SDK:
Release: 1.5.2
Timestamp: Mon Jul 18 18:48:56 CDT 2011
API versions: [1.0]

-----------
Please visit http://code.google.com/appengine for the latest SDK.
********************************************************

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