diff --git a/package.json b/package.json
index 1f7dbe049..fee797e18 100644
--- a/package.json
+++ b/package.json
@@ -42,13 +42,13 @@
     "extract-text-webpack-plugin": "^2.0.0-beta",
     "file-loader": "~0.9.0",
     "i18n-webpack-plugin": "^0.3.0",
-    "istanbul": "^0.4.1",
+    "istanbul": "^0.4.5",
     "jade": "^1.11.0",
     "jade-loader": "~0.8.0",
     "js-beautify": "^1.5.10",
     "less": "^2.5.1",
     "less-loader": "^2.0.0",
-    "mocha": "^3.1.0",
+    "mocha": "^3.2.0",
     "mocha-lcov-reporter": "^1.0.0",
     "nsp": "^2.6.1",
     "raw-loader": "~0.5.0",
@@ -64,7 +64,7 @@
     "worker-loader": "~0.7.0"
   },
   "engines": {
-    "node": ">=0.12"
+    "node": ">=4.7"
   },
   "repository": {
     "type": "git",