diff --git a/package.json b/package.json
index 1abd52f..80182bf 100644
--- a/package.json
+++ b/package.json
@@ -22,10 +22,11 @@
     "zone.js": "^0.8.5"
   },
   "devDependencies": {
+    "@types/es6-promise": "0.0.32",
     "awesome-typescript-loader": "^3.1.2",
+    "json-server": "^0.8.22",
     "typescript": "^2.2.2",
     "webpack": "^2.3.3",
-    "webpack-dev-server": "^2.4.2",
-    "json-server": "^0.8.22"
+    "webpack-dev-server": "^2.4.2"
   }
 }