diff --git a/package.json b/package.json
index 32cbb4c8..202298ab 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "yarn": ">=1"
   },
   "scripts": {
-    "coverage": "nyc --reporter=lcov --reporter=text yarn test",
+    "coverage": "nyc --all --include='src/**/*[.js|.jsx|.ts|.tsx]' --reporter=lcov --reporter=text yarn test",
     "test": "mocha -r @babel/register -r @babel/polyfill --recursive test/*.test.js test/**/*.test.js",
     "test:cli": "yarn -s build && ./bin/cli.js -c test/cli/i18next-parser.config.js",
     "watch": "babel src -d dist -w",