diff --git a/package.json b/package.json
index 19c31d9..9c1dd0e 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,10 @@
     "react-webpack-template": "^0.3.0",
     "underscore.string": "^3.2.2",
     "yeoman-generator": "^0.21.0",
-    "yeoman-welcome": "^1.0.1"
+    "yeoman-welcome": "^1.0.1",
+    "esprima": "^2.7.0" ,
+    "esprima-walk": "^0.1.0" ,
+    "escodegen": "^1.7.0"
   },
   "devDependencies": {
     "chai": "^3.2.0",