diff --git a/package.json b/package.json
index 987c1b7..4a165e9 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,10 @@
   "version": "2.0.10",
   "description": "Lint, type-check, compile, package and gzip JavaScript (ES6 + Flow static types + JSX), for the browser as well as NodeJS; lint, compile, auto-prefix, minify and gzip SASS.",
   "main": "build/index.js",
+  "engines": {
+    "node": ">=4.1.1",
+    "npm": ">=3.0.0"
+  },
   "scripts": {
     "test": "babel-istanbul cover --root lib --print detail --include-all-sources --include-babel-polyfill jasmine",
     "lint": "eslint ./",
@@ -60,16 +64,12 @@
     "node-sass": "^3.4.1",
     "node-sass-import-once": "^1.2.0",
     "postcss": "^5.0.10",
+    "react-hot-loader": "^1.3.0",
     "tiny-lr": "^0.2.1",
     "uglify-js": "^2.5.0",
     "webpack": "^1.12.2",
     "webpack-dev-server": "^1.12.1"
   },
-  "peerDependencies": {
-    "babel-loader": "5.x",
-    "babel-runtime": "5.x",
-    "react-hot-loader": "1.x"
-  },
   "devDependencies": {
     "babel-istanbul": "^0.4.1",
     "coveralls": "^2.11.4",