diff --git a/package.json b/package.json
index 898ee96..a57e5fb 100644
--- a/package.json
+++ b/package.json
@@ -23,22 +23,22 @@
   "license": "MIT",
   "readmeFilename": "README.md",
   "dependencies": {
-    "optimist": "~0.6.0",
+    "optimist": "~0.6.1",
     "lodash": "~2.4.1"
   },
   "devDependencies": {
-    "grunt": "~0.4.1",
+    "grunt": "~0.4.3",
     "expect.js": "~0.2.0",
     "grunt-release": "~0.5.1",
     "grunt-contrib-watch": "~0.2.0",
     "grunt-conventional-changelog": "~0.0.12",
-    "karma-mocha": "~0.1.0",
-    "karma": "~0.11.0",
+    "karma-mocha": "~0.1.1",
+    "karma": "~0.12.0",
     "karma-firefox-launcher": "~0.1.3",
     "karma-chrome-launcher": "~0.1.2"
   },
   "peerDependencies": {
     "grunt": "0.4.x",
-    "karma": "~0.11.0"
+    "karma": "~0.12.0"
   }
 }
diff --git a/tasks/grunt-karma.js b/tasks/grunt-karma.js
index 3fbf7af..134097f 100644
--- a/tasks/grunt-karma.js
+++ b/tasks/grunt-karma.js
@@ -19,9 +19,9 @@ module.exports = function(grunt) {
     var options = this.options({
       background: false,
       // allow passing of cli args on as client args, for example --grep=x
-      clientArgs: optimist.argv,
-      client: { args: optimist.argv }
+      client: { args: optimist.argv._ }
     });
+
     var data = this.data;
     //merge options onto data, with data taking precedence
     data = _.merge(options, data);
@@ -36,7 +36,7 @@ module.exports = function(grunt) {
       runner.run(data, finished.bind(done));
       return;
     }
-    
+
     //allow karma to be run in the background so it doesn't block grunt
     if (data.background){
       grunt.util.spawn({cmd: 'node', args: [path.join(__dirname, '..', 'lib', 'background.js'), JSON.stringify(data)]}, function(){});