Install triggering chef error

Using chef 10.18.2 and 10.24.0 on ubuntu 12.04.1

When I apply any of the logstash recipes to my run list I get the following warning

[2013-03-11T17:37:36+00:00] WARN: Setting attributes without specifying a precedence is deprecated and will be removed in Chef 11.0. To set attributes at normal precedence, change code like:
`node["key"] = "value"` # Not this
to:
`node.set["key"] = "value"` # This
Called from:
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-10.18.2/lib/chef/node/attribute.rb:449:in `method_missing'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-10.18.2/lib/chef/node.rb:346:in `method_missing'
/var/chef/cache/cookbooks/logstash/attributes/server.rb:26:in `from_file'

I've looked at the source of the logstash attributes file and I don't see anything like the warning describes.

I can also take this to the chef issue list if more appropriate.

Thanks,
Tom