diff --git a/lib/http-proxy/index.js b/lib/http-proxy/index.js
index 977a4b362..8dfa44f11 100644
--- a/lib/http-proxy/index.js
+++ b/lib/http-proxy/index.js
@@ -47,7 +47,7 @@ function createRightProxy(type) {
         args[cntr] !== res
       ) {
         //Copy global options
-        requestOptions = extend({}, options);
+        requestOptions = Object.assign({}, options);
         //Overwrite with request options
         extend(requestOptions, args[cntr]);