diff --git a/package.json b/package.json
index 44b6696..986360f 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
   "devDependencies": {
     "babel-cli": "^6.16.0",
     "chai": "^3.5.0",
-    "coveralls": "^2.11.9",
+    "coveralls": "^2.11.15",
     "mocha": "^3.1.0",
     "nyc": "^8.3.0",
     "object-assign": "^4.1.0",