Need more space for my PPA

Today I've got this:
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Rejected:
PPA exceeded its size limit (2065.00 of 2048.00 MiB). Ask a question in https://answers.launchpad.net/soyuz/ if you need more space.

epiphany-browser (3.18.0+git20151030-0ubuntu1~xenial1) xenial; urgency=medium

  * Upstream git version

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And yesterday I've purged around 50 wily packages but repository free space didn't increase yet.
If it spend more time to purge sources, I really need more space to build xenial packages for testing wayland...
At least 4GB or higer I hope.
my PPA is here: https://launchpad.net/~tista/+archive/ubuntu/wayland

Regards.
Tista