diff --git a/package.json b/package.json
index 93e25ec..912c124 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,9 @@
   },
   "devDependencies": {
     "@types/debug": "0.0.29",
+    "@types/event-stream": "3.3.30",
+    "@types/gulp": "3.8.32",
+    "@types/gulp-typescript": "0.0.32",
     "@types/node": "7.0.5",
     "@types/request": "0.0.39",
     "event-stream": "3.3.4",