diff --git a/lib/command.js b/lib/command.js
index 0b36589a..3101922f 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -3,7 +3,7 @@
  * Module dependencies.
  */
 
-var spawn = require('child_process').spawn;
+var spawn = require('cross-spawn');
 var utils = require('./utils');
 var debug = require('debug')('gm');
 var series = require('array-series');
diff --git a/lib/compare.js b/lib/compare.js
index bab52622..a24ea047 100644
--- a/lib/compare.js
+++ b/lib/compare.js
@@ -1,6 +1,6 @@
 // compare
 
-var spawn = require('child_process').spawn;
+var spawn = require('cross-spawn');
 
 /**
  * Compare two images uses graphicsmagicks `compare` command.
diff --git a/package.json b/package.json
index f6245ecb..a783464b 100644
--- a/package.json
+++ b/package.json
@@ -40,8 +40,9 @@
     "async": "~0.9.0"
   },
   "dependencies": {
-    "debug": "~2.2.0",
+    "array-parallel": "~0.1.3",
     "array-series": "~0.1.5",
-    "array-parallel": "~0.1.3"
+    "cross-spawn": "^4.0.0",
+    "debug": "~2.2.0"
   }
 }