diff --git a/package.json b/package.json
index d4ff8ba..1b96490 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "clean": "gulp clean",
     "document": "typedoc ./src/",
     "test": "cross-env NODE_ENV=test mocha -r ts-node/register",
-    "cover": "cross-env NODE_ENV=test nyc --reporter=html --reporter=text mocha -r ts-node/register",
+    "cover": "cross-env NODE_ENV=test nyc --reporter=html --reporter=lcov --reporter=text mocha -r ts-node/register",
     "coveralls": "cross-env NODE_ENV=test nyc report --reporter=text-lcov | coveralls"
   },
   "repository": {