diff --git a/Gruntfile.coffee b/Gruntfile.coffee
index f85b7e7..935a687 100644
--- a/Gruntfile.coffee
+++ b/Gruntfile.coffee
@@ -2,21 +2,12 @@ module.exports = (grunt) ->
 	# Project configuration.
 	grunt.initConfig
 		pkg: grunt.file.readJSON('package.json')
-		regarde:
+		watch:
 			module:
 				files: ["_src/**/*.coffee"]
-				tasks: [ "coffee:changed" ]
+				tasks: [ "coffee:base" ]
 			
 		coffee:
-			changed:
-				expand: true
-				cwd: '_src'
-				src:	[ '<% print( _.first( ((typeof grunt !== "undefined" && grunt !== null ? (_ref = grunt.regarde) != null ? _ref.changed : void 0 : void 0) || ["_src/nothing"]) ).slice( "_src/".length ) ) %>' ]
-				# template to cut off `_src/` and throw on error on non-regrade call
-				# CF: `_.first( grunt?.regarde?.changed or [ "_src/nothing" ] ).slice( "_src/".length )
-				dest: ''
-				ext: '.js'
-
 			base:
 				expand: true
 				cwd: '_src',
@@ -52,7 +43,7 @@ module.exports = (grunt) ->
 			main:
 				src: [ "test/main.js" ]
 				options:
-					env: 
+					env:
 						severity_rsmqworker: "warning"
 		
 		
@@ -74,7 +65,7 @@ module.exports = (grunt) ->
 		
 
 	# Load npm modules
-	grunt.loadNpmTasks "grunt-regarde"
+	grunt.loadNpmTasks "grunt-contrib-watch"
 	grunt.loadNpmTasks "grunt-contrib-coffee"
 	grunt.loadNpmTasks "grunt-contrib-clean"
 	grunt.loadNpmTasks "grunt-mocha-cli"
@@ -85,7 +76,6 @@ module.exports = (grunt) ->
 	grunt.option('force', not grunt.option('force'))
 	
 	# ALIAS TASKS
-	grunt.registerTask "watch", "regarde"
 	grunt.registerTask "default", "build"
 	grunt.registerTask "docs", "docker"
 	grunt.registerTask "clear", [ "clean:base" ]
@@ -93,4 +83,4 @@ module.exports = (grunt) ->
 
 	# build the project
 	grunt.registerTask "build", [ "clear", "coffee:base", "includereplace" ]
-	grunt.registerTask "build-dev", [ "clear", "coffee:base", "docs", "test" ]
\ No newline at end of file
+	grunt.registerTask "build-dev", [ "clear", "coffee:base", "docs", "test" ]
diff --git a/README.md b/README.md
index bbd0b4e..46bda43 100644
--- a/README.md
+++ b/README.md
@@ -298,7 +298,8 @@ This is an advanced example showing some features in action.
 ## Release History
 |Version|Date|Description|
 |:--:|:--:|:--|
-|0.3.8|2015-11-04|Fixed stop behaviour. [Pull#5](https://github.com/mpneuried/rsmq-worker/pull/5). Thanks to [Exinferis](https://github.com/exinferis)|
+|0.4.0|2016-03-30|Updated dependencies (especially lodash to 4.x). Fixed a config bug caused by the array merge from `extend` [Issue#7](https://github.com/mpneuried/rsmq-worker/issues/7). Thanks to [Peter Hanneman](https://github.com/timelessvirtues )|
+|0.3.8|2015-11-04|Fixed stop behavior. [Pull#5](https://github.com/mpneuried/rsmq-worker/pull/5). Thanks to [Exinferis](https://github.com/exinferis)|
 |0.3.7|2015-09-02|Added tests to check the behavior during errors within message processing; Added option `alwaysLogErrors` to prevent console logs if an error event handler was attached. [Issue #3](https://github.com/mpneuried/rsmq-worker/issues/3)|
 |0.3.6|2015-09-02|Updated dependencies; optimized readme (thanks to [Tobias Lidskog](https://github.com/tobli) for the [pull #4](https://github.com/mpneuried/rsmq-worker/pull/4))|
 |0.3.5|2015-04-27|again ... fixed argument dispatch for `.send()`|
diff --git a/_src/lib/rsmq-worker.coffee b/_src/lib/rsmq-worker.coffee
index cfaa6c8..852b06a 100644
--- a/_src/lib/rsmq-worker.coffee
+++ b/_src/lib/rsmq-worker.coffee
@@ -9,7 +9,13 @@
 #
 
 # **node modules**
-_ = require("lodash")
+_isFunction = require( "lodash/isFunction" )
+_once = require( "lodash/once" )
+_isBoolean = require( "lodash/isBoolean" )
+_isArray = require( "lodash/isArray" )
+_last = require( "lodash/last" )
+_delay = require( "lodash/delay" )
+
 async = require("async")
 RSMQ = require("rsmq")
 
@@ -57,6 +63,10 @@ class RSMQWorker extends require( "mpbasic" )()
 	###
 	constructor: ( @queuename, options )->
 		super( options )
+		# hard set of the interval because extend will merge the default with the given elements
+		if options.interval? and _isArray( options.interval )
+			@config.interval = options.interval
+	
 		@ready = false
 
 		@waitCount = 0
@@ -128,7 +138,7 @@ class RSMQWorker extends require( "mpbasic" )()
 	###
 	send: ( msg, args... )=>
 		[ delay, cb ] = args
-		if _.isFunction( delay )
+		if _isFunction( delay )
 			cb = delay
 			delay = null
 
@@ -159,11 +169,11 @@ class RSMQWorker extends require( "mpbasic" )()
 		@queue.deleteMessage qname: @queuename, id: id, ( err, resp )=>
 			if err
 				@error "delete queue message", err
-				cb( err ) if _.isFunction( cb )
+				cb( err ) if _isFunction( cb )
 				return
 			@debug "delete queue message", resp
 			@emit( "deleted", id )
-			cb( null ) if _.isFunction( cb )
+			cb( null ) if _isFunction( cb )
 			return
 		return @
 
@@ -300,10 +310,10 @@ class RSMQWorker extends require( "mpbasic" )()
 		@queue.sendMessage { qname: @queuename, message: msg, delay: delay }, ( err, resp )=>
 			if err
 				@error "send pending queue message", err
-				cb( err ) if cb? and _.isFunction( cb )
+				cb( err ) if cb? and _isFunction( cb )
 				return
 			@emit "new", resp
-			cb( null, resp ) if cb? and _.isFunction( cb )
+			cb( null, resp ) if cb? and _isFunction( cb )
 			return
 		return
 
@@ -362,8 +372,8 @@ class RSMQWorker extends require( "mpbasic" )()
 						return
 					, @config.timeout )
 
-				_fnNext = _.once ( del = true )=>
-					if _.isBoolean( del ) or _.isNumber( del )
+				_fnNext = _once ( del = true )=>
+					if _isBoolean( del ) or _isNumber( del )
 						@del( _id ) if del
 					else if del?
 						# if there is a return value ant it's not a boolean or number i asume it's an error
@@ -436,8 +446,8 @@ class RSMQWorker extends require( "mpbasic" )()
 		if not wait
 			@waitCount = 0
 
-		if _.isArray( @config.interval )
-			_timeout = if @config.interval[ @waitCount ]? then @config.interval[ @waitCount ] else _.last( @config.interval )
+		if _isArray( @config.interval )
+			_timeout = if @config.interval[ @waitCount ]? then @config.interval[ @waitCount ] else _last( @config.interval )
 		else
 			if wait
 				_timeout = @config.interval
@@ -447,7 +457,7 @@ class RSMQWorker extends require( "mpbasic" )()
 		@debug "wait", @waitCount, _timeout * 1000
 		if _timeout >= 0
 			clearTimeout( @timeout ) if @timeout?
-			@timeout = _.delay( @interval, _timeout * 1000 )
+			@timeout = _delay( @interval, _timeout * 1000 )
 			@waitCount++
 		else
 			@interval()
diff --git a/_src/test/main.coffee b/_src/test/main.coffee
index e2cdd3b..93e875d 100644
--- a/_src/test/main.coffee
+++ b/_src/test/main.coffee
@@ -9,7 +9,7 @@ describe "----- rsmq-worker TESTS -----", ->
 	before ( done )->
 
 		RSMQWorker = require( "../." )
-		worker = new RSMQWorker( _queuename, { interval: [ 0, 1 ] } )
+		worker = new RSMQWorker( _queuename, { interval: [ 0, 1, 5 ] } )
 
 		worker.on "ready", ->
 			done()
@@ -25,7 +25,16 @@ describe "----- rsmq-worker TESTS -----", ->
 		return
 
 	describe 'Main Tests', ->
-
+		
+		# Implement tests cases here
+		it "check interval config", ( done )->
+			worker.config.interval.length.should.equal( 3 )
+			worker.config.interval[ 0 ].should.equal( 0 )
+			worker.config.interval[ 1 ].should.equal( 1 )
+			worker.config.interval[ 2 ].should.equal( 5 )
+			done()
+			return
+		
 		# Implement tests cases here
 		it "first test", ( done )->
 			_examplemsg = utils.randomString( utils.randRange( 4, 99 ), 3 )
@@ -54,9 +63,9 @@ describe "----- rsmq-worker TESTS -----", ->
 
 				should.equal( msg, _examplemsg )
 				next()
+				worker.removeListener( "message", _testFn )
 				_diff = Math.round( ( Date.now() - _start )/1000 )
 				_diff.should.be.above(_delay)
-				worker.removeListener( "message", _testFn )
 				done()
 				return
 
diff --git a/package.json b/package.json
index 7a579b9..9b8f20b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rsmq-worker",
-  "version": "0.3.8",
+  "version": "0.4.0",
   "description": "RSMQ helper to simply implement a worker around the message queue",
   "keywords": [],
   "homepage": "https://github.com/mpneuried/rsmq-worker",
@@ -23,19 +23,19 @@
   },
   "license": "MIT",
   "dependencies": {
-    "async": "1.4.x",
-    "lodash": "3.x",
+    "async": "1.5.x",
+    "lodash": "4.x",
     "mpbasic": "0.0.x",
-    "rsmq": "0.3.x"
+    "rsmq": "0.7.x"
   },
   "devDependencies": {
-    "should": "4.3.x",
+    "should": "8.x",
     "grunt": "0.4.x",
-    "grunt-regarde": "*",
-    "grunt-contrib-coffee": "0.13.x",
-    "grunt-include-replace": "3.0.x",
-    "grunt-mocha-cli": "1.13.x",
-    "grunt-docker": "0.0.x",
-    "grunt-contrib-clean": "0.6.x"
+    "grunt-contrib-watch": "1.x",
+    "grunt-contrib-coffee": "1.x",
+    "grunt-include-replace": "3.x",
+    "grunt-mocha-cli": "2.x",
+    "grunt-docker": "0.x",
+    "grunt-contrib-clean": "1.x"
   }
 }