diff --git a/package.json b/package.json
index ce65abb..7cbf9c9 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "babel-preset-es2015": "^6.1.2",
     "coveralls": "^2.11.8",
     "mocha": "^2.4.5",
-    "npm-run-all": "^1.5.1",
+    "npm-run-all": "^2.1.1",
     "nyc": "^6.0.0",
     "rimraf": "^2.5.2"
   },