diff --git a/lib/fs.js b/lib/fs.js
index b897ba4..dcbc76b 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -304,7 +304,7 @@ function readFile(path, options = {}, callback) {
     options = {};
   }
 
-  if (!options.hasOwnProperty('encoding')) options.encoding = 'utf8';
+  if (!Object.prototype.hasOwnProperty.call(options, 'encoding')) options.encoding = 'utf8';
 
   return readFileAsync(path, options).then(content => {
     if (options.escape == null || options.escape) {
@@ -318,7 +318,7 @@ function readFile(path, options = {}, callback) {
 function readFileSync(path, options = {}) {
   if (!path) throw new TypeError('path is required!');
 
-  if (!options.hasOwnProperty('encoding')) options.encoding = 'utf8';
+  if (!Object.prototype.hasOwnProperty.call(options, 'encoding')) options.encoding = 'utf8';
 
   const content = fs.readFileSync(path, options);
 
diff --git a/package.json b/package.json
index 968fc6b..401183b 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
   },
   "devDependencies": {
     "chai": "^4.1.2",
-    "eslint": "^5.16.0",
+    "eslint": "^6.0.1",
     "eslint-config-hexo": "^3.0.0",
     "iferr": "^1.0.2",
     "istanbul": "^0.4.5",