diff --git a/lib/package.coffee b/lib/package.coffee
index 0d46640..35c25f6 100644
--- a/lib/package.coffee
+++ b/lib/package.coffee
@@ -3,7 +3,7 @@
 class Package
 
   fs = require "fs"
-  rc = require "rc"
+  rc = require "runtime-configuration"
   url = require "url"
   util = require "util"
   glob = require "glob"
@@ -154,24 +154,25 @@ class Package
       return callback.call( @, err ) if err
 
       # load npmrc configuration
-      @rc = rc "npm", registry: "https://registry.npmjs.org/"
+      rc "npm", registry: "https://registry.npmjs.org/", ( err, config ) =>
+        @rc = config
 
-      try
-        # try to load info from package.json
-        @pkg = @require @path
+        try
+          # try to load info from package.json
+          @pkg = @require @path
 
-        # fill dependencies
-        @dependencies = @pkg.dependencies
-        @devDependencies = @pkg.devDependencies
+          # fill dependencies
+          @dependencies = @pkg.dependencies
+          @devDependencies = @pkg.devDependencies
 
-        callback.call @
-      catch e
-        if e.code is "ENOENT"
-          # if package.json not exists, should initialize dependencies
-          @create callback
-        else
-          # if package.json is broken
-          callback.call @, e
+          callback.call @
+        catch e
+          if e.code is "ENOENT"
+            # if package.json not exists, should initialize dependencies
+            @create callback
+          else
+            # if package.json is broken
+            callback.call @, e
 
     @
 
diff --git a/package.json b/package.json
index 87f8af2..1be95df 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "request": "2.12.0",
     "wrench": "1.4.4",
     "colors": "0.6.0-1",
-    "rc": "0.0.6"
+    "runtime-configuration": "0.1.1"
   },
   "devDependencies": {
     "mocha": "1.8.1",
diff --git a/test/helpers.js b/test/helpers.js
index adc4056..62c7643 100644
--- a/test/helpers.js
+++ b/test/helpers.js
@@ -1,7 +1,7 @@
 global.fs = require( "fs" )
 global.path = require( "path" )
 global.wrench = require( "wrench" )
-global.rc = require( "rc" )
+global.rc = require( "runtime-configuration" )
 global.sinon = require( "sinon" )
 global.request = require( "request" )
 global.exec = require('child_process').exec
diff --git a/test/specs/programmatic/package.coffee b/test/specs/programmatic/package.coffee
index 2633395..ad71580 100644
--- a/test/specs/programmatic/package.coffee
+++ b/test/specs/programmatic/package.coffee
@@ -1,8 +1,9 @@
 describe "Package", ->
 
-  before ->
-    @npmrc = rc "npm", registry: "https://registry.npmjs.org/"
-
+  before ( done ) ->
+    rc "npm", registry: "https://registry.npmjs.org/", ( err, @npmrc ) =>
+      done()
+      
   describe "@lookup()", ->
 
     it "should lookup package.json in specified directory", ( done ) ->