[nanobsd] Not enough space

[ncat]

Hello.
Recently upgraded pfSense to 2.2.4 and tried to reinstall packages.
Here is what i got:

pkg: Not enough space in /var/cache/pkg, needed 29 MiB available 25 MiB

Is there anything I can do to increase space?
nanobsd (4g)

Sadly, i cannot even install mc  :(

Thank you.

[phil.davis]

System->Advanced, Miscellaneous tab, RAM Disk Settings.
Increase the size of /var
Keep in mind the amount of real memory you have in your system - do not increase /var so much that all your real memory is consumed.