Piwik behind proxy

First of all, let me clarify. Piwik is NOT behind a reverse proxy. Clients are NOT connecting to Piwik through a proxy.

Piwik, however, has to connect through a proxy to get internet access, and the only part where that has become a problem is with version checking/updating.

Is there any way to configure piwik to use a http proxy for internet access (so that it can download new versions)?

Targeted for Piwik 1.5. In the meantime, look here: