diff --git a/lib/utils/json-utils.js b/lib/utils/json-utils.js
deleted file mode 100644
index 3002bf3f7..000000000
--- a/lib/utils/json-utils.js
+++ /dev/null
@@ -1,10 +0,0 @@
-
-const { stringify } = require('flatted/cjs')
-
-const JsonUtils = {
-  stringify (obj) {
-    return stringify(obj)
-  }
-}
-
-module.exports = JsonUtils
diff --git a/package-lock.json b/package-lock.json
index 75b5f56a5..df060cd41 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6217,12 +6217,6 @@
         }
       }
     },
-    "flatted": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/flatted/-/flatted-2.0.2.tgz",
-      "integrity": "sha512-r5wGx7YeOwNWNlCA0wQ86zKyDLMQr+/RB8xy74M4hTphfmjlijTSSXGuH8rnvKZnfT9i+75zmd8jcKdMR4O6jA==",
-      "dev": true
-    },
     "follow-redirects": {
       "version": "1.11.0",
       "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.11.0.tgz",
diff --git a/package.json b/package.json
index 3ba73d283..487e40f48 100644
--- a/package.json
+++ b/package.json
@@ -431,7 +431,6 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1",
     "eslint-plugin-standard": "^4.0.1",
-    "flatted": "^2.0.2",
     "grunt": "^1.2.1",
     "grunt-auto-release": "^0.0.7",
     "grunt-browserify": "^5.0.0",
diff --git a/test/unit/utils/json-utils.spec.js b/test/unit/utils/json-utils.spec.js
deleted file mode 100644
index 92b69762a..000000000
--- a/test/unit/utils/json-utils.spec.js
+++ /dev/null
@@ -1,18 +0,0 @@
-'use strict'
-
-const JsonUtils = require('../../../lib/utils/json-utils')
-
-describe('json-utils', () => {
-  it('stringify-s', () => {
-    const obj = { a: 'a', i: 1 }
-    const json = JsonUtils.stringify(obj)
-    expect(json).to.be.equal('[{"a":"1","i":1},"a"]')
-  })
-  it('stringify-s circular data', () => {
-    const a = [{}]
-    a[0].a = a
-    a.push(a)
-
-    expect(JsonUtils.stringify(a)).to.be.equal('[["1","0"],{"a":"0"}]')
-  })
-})