diff --git a/package.json b/package.json
index 310ca4a8ed..4c196f3bb2 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "scripts": {
     "prebuild": "npm run clean",
     "build": "run-p build:*:prod",
-    "lint": "tslint src/**/*.ts",
+    "lint": "tslint src/**/*.ts test/**/*.ts",
     "test": "run-s clean test:commonjs",
     "test:umd": "run-s substitute_umd_bundle run_mocha; npm run clean",
     "test:coverage": "nyc npm run test --all",