HTTPal and Carpark gems now have their dependency on Rake tagged. I learned about this from the firebrigade project from the Seattle Ruby Brigade. Thanks duders!

How to update:

bkerley@larry-sellers ~> sudo gem update HTTPal Carpark
Password:
Updating installed gems...
Need to update 2 gems from http://gems.rubyforge.org
..
complete
Attempting remote update of Carpark
Successfully installed Carpark-26
Attempting remote update of HTTPal
Successfully installed HTTPal-25
Gems: [Carpark, HTTPal] updated

(omit Carpark or HTTPal from the command line if you don't care about them)