diff --git a/package.json b/package.json
index 2063d95..ce62f13 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   "devDependencies": {
     "better-assert": "1.0.1",
     "browserify": "14.1.0",
-    "coveralls": "2.11.16",
+    "coveralls": "2.13.1",
     "eslint": "3.15.0",
     "eslint-config-airbnb-base": "11.1.0",
     "eslint-plugin-import": "2.2.0",