diff --git a/lib/cli.js b/lib/cli.js
index eb5dbf4..0eb3a88 100755
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -154,7 +154,9 @@ function main (args) {
 
 // from http://stackoverflow.com/questions/1359761/sorting-a-json-object-in-javascript
 function sortObject(o) {
-  if (Object.prototype.toString.call(o) !== '[object Object]') {
+  if (Array.isArray(o)) {
+    return o.map(sortObject);
+  } else if (Object.prototype.toString.call(o) !== '[object Object]') {
     return o;
   }