diff --git a/package.json b/package.json
index a5b5a5f2e..ed3756a38 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,6 @@
     "key-path-helpers": "^0.4.0",
     "less-cache": "0.23",
     "line-top-index": "0.2.0",
-    "lodash.clonedeep": "*",
     "marked": "^0.3.6",
     "minimatch": "^3.0.3",
     "mocha": "2.5.1",
diff --git a/src/main-process/atom-application.coffee b/src/main-process/atom-application.coffee
index c1c7168ae..02a5e68de 100644
--- a/src/main-process/atom-application.coffee
+++ b/src/main-process/atom-application.coffee
@@ -15,7 +15,6 @@ net = require 'net'
 url = require 'url'
 {EventEmitter} = require 'events'
 _ = require 'underscore-plus'
-cloneDeep = require 'lodash.clonedeep'
 FindParentDir = null
 Resolve = null
 
@@ -113,7 +112,7 @@ class AtomApplication
   launch: (options) ->
     if options.pathsToOpen?.length > 0 or options.urlsToOpen?.length > 0 or options.test or options.benchmark or options.benchmarkTest
       if @config.get('core.restorePreviousWindowsOnStart') is 'always'
-        @loadState(cloneDeep(options))
+        @loadState(_.deepClone(options))
       @openWithOptions(options)
     else
       @loadState(options) or @openPath(options)