diff --git a/lib/index.js b/lib/index.js
index 67b8352..1368198 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -39,7 +39,7 @@ var JsonRequest = module.exports = function (options, data, callback) {
         options.method = "POST";
     }
 
-    options = Ul.merge(options, {
+    options = Ul.deepMerge(options, {
         headers: {
             "Content-Type": "application/json"
         }