diff --git a/package.json b/package.json
index 8216b37..4ae23a3 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,6 @@
     "mkdirp": "~0.3.5",
     "module-deps": "^3.5.4",
     "ncp": "~0.2.7",
-    "optimist": "~0.3.7",
     "outcome": "0.0.18",
     "progress": "~1.1.3",
     "request": "~2.12.0",
@@ -24,7 +23,8 @@
     "step": "0.0.x",
     "tar.gz": "0.1.1",
     "through": "^2.3.4",
-    "uglify-js": "^2.4.15"
+    "uglify-js": "^2.4.15",
+    "yargs": "~1.3.1"
   },
   "preferGlobal": "true",
   "bin": {