为什么wiredep一直在移除我的bower组件

每当wiredep grunt任务运行时，它都会删除socketio。

~/.g/p/g/g/s/b/f/brody % git diff
diff --git a/app/app/index.html b/app/app/index.html
index 9abc970..f9dd603 100644
--- a/app/app/index.html
+++ b/app/app/index.html
@@ -65,7 +65,6 @@
     <!-- build:js(.) scripts/vendor.js -->
     <!-- bower:js -->
     <script src="bower_components/jquery/dist/jquery.js"></script>
-    <script src="bower_components/socket.io-client/socket.io.js"></script>
     <script src="bower_components/angular/angular.js"></script>
     <script src="bower_components/bootstrap/dist/js/bootstrap.js"></script>
     <script src="bower_components/angular-animate/angular-animate.js"></script>
diff --git a/app/test/karma.conf.js b/app/test/karma.conf.js
index 710f26a..ab51cc6 100644
--- a/app/test/karma.conf.js
+++ b/app/test/karma.conf.js
@@ -20,7 +20,6 @@ module.exports = function(config) {
     files: [
       // bower:js
       'bower_components/jquery/dist/jquery.js',
-      'bower_components/socket.io-client/socket.io.js',
       'bower_components/angular/angular.js',
       'bower_components/bootstrap/dist/js/bootstrap.js',
       'bower_components/angular-animate/angular-animate.js',
~/.g/p/g/g/s/b/f/brody % 

我已经通过安装了socketio

bower install socket.io-client --save 

包裹在我的bower.json 中

{
  "name": "app",
  "version": "0.0.0",
  "dependencies": {
    "socket.io-client": "~1.3.4",
    "angular": "^1.3.0",
    "bootstrap": "^3.2.0",
    "angular-animate": "^1.3.0",
    "angular-aria": "^1.3.0",
    "angular-cookies": "^1.3.0",
    "angular-messages": "^1.3.0",
    "angular-resource": "^1.3.0",
    "angular-route": "^1.3.0",
    "angular-sanitize": "^1.3.0",
    "angular-touch": "^1.3.0",
    "angular-socket-io": "~0.7.0",
    "message-center": "https://github.com/mateu-aguilo-bosch/message-center.git#~1.1.4"
  },
  "devDependencies": {
    "angular-mocks": "^1.3.0"
  },
  "appPath": "app",
  "moduleName": "appApp"
}

当我运行bower install时，没有任何变化。

该应用程序在我的mac上构建得很好，但出于某种疯狂的原因，它不断删除socketio，无法在我的ubuntu机器上构建。