diff --git a/package.json b/package.json
index 9d3cf78..ab27001 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   "license": "UNLICENSED",
   "private": true,
   "engines": {
-    "node": ">=0.10"
+    "node": ">=10.0"
   },
   "scripts": {
     "unit-test": "nyc --reporter=text mocha",
diff --git a/test/index-test.js b/test/index-test.js
index 027d5b4..f1119f1 100644
--- a/test/index-test.js
+++ b/test/index-test.js
@@ -1,3 +1,5 @@
+"use strict"
+
 const expect = require("chai").expect;
 const F95API = require("../app/index");
 const fs = require("fs");