gistfile1.diff

diff --git i/lib/tasks/db.rake w/lib/tasks/db.rake
index a893c6c..0140f34 100644
--- i/lib/tasks/db.rake
+++ w/lib/tasks/db.rake
@@ -1,10 +1,10 @@
 namespace :db do
   desc "Dump data from PostgreSQL database"
   task dump: :environment do
-    config  = YAML::load_file(Rails.root.join("config", "database.yml"))[Rails.env]
+    config  = ActiveRecord::Base.configurations[Rails.env]
     db_name = config['database']
     uname   = config['username']
-    host    = config['host']
+    host    = config['host'] || config['socket']
     out     = Rails.root.join "tmp", "dump.sql"
 
     sh = "`which pg_dump` -U#{uname} -w #{db_name} -h #{host} > #{out}"