diff --git a/package.json b/package.json
index 78b22f1c5..b8fa68b36 100644
--- a/package.json
+++ b/package.json
@@ -16,13 +16,10 @@
     "grunt-env": "0.4.4",
     "grunt-exec": "1.0.1",
     "grunt-mkdir": "1.0.0",
-    "grunt-multi-dest": "1.0.0",
     "grunt-shell": "2.1.0",
     "grunt-simple-mocha": "0.4.1",
-    "grunt-ts": "5.3.2",
     "grunt-tslint": "4.0.0",
     "grunt-typedoc": "0.2.4",
-    "grunt-untar": "0.0.1",
     "http-server": "^0.9.0",
     "markdown-snippet-injector": "0.1.1",
     "mocha": "2.2.5",