diff --git a/CHANGELOG b/CHANGELOG
index 0ddbd33..b4280f4 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+# 1.1.0
+- feat: cloneDeep
+
 # 1.0.0
 - feat: getArrayHasIntersect
 - feat: getArrayUniq
diff --git a/index.d.ts b/index.d.ts
index f53ebef..29cd6ea 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,3 +1,4 @@
+export function cloneDeep (obj: Object): Object
 export function getArrayHasIntersect (arr1: Array<any>, arr2: Array<any>): boolean
 export function getArrayUniq (arr: Array<any>): Array<any>
 export function isNil(val: any): boolean
diff --git a/index.js b/index.js
index 79d831f..b6434f8 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,6 @@
 'use strict'
 
+const cloneDeep = require('./src/cloneDeep')
 const getArrayHasIntersect = require('./src/getArrayHasIntersect')
 const getArrayUniq = require('./src/getArrayUniq')
 const isNil = require('./src/isNil')
@@ -8,6 +9,7 @@ const pick = require('./src/pick')
 const pickBy = require('./src/pickBy')
 
 module.exports = {
+  cloneDeep,
   getArrayHasIntersect,
   getArrayUniq,
   isNil,
diff --git a/package.json b/package.json
index da7a8a6..7b1bce1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@bitfinex/lib-js-util-base",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "general utils",
   "main": "index.js",
   "scripts": {
diff --git a/src/cloneDeep.js b/src/cloneDeep.js
new file mode 100644
index 0000000..08b6c68
--- /dev/null
+++ b/src/cloneDeep.js
@@ -0,0 +1,5 @@
+'use strict'
+
+const cloneDeep = (obj) => JSON.parse(JSON.stringify(obj))
+
+module.exports = cloneDeep
diff --git a/test/cloneDeep.js b/test/cloneDeep.js
new file mode 100644
index 0000000..dc7db0a
--- /dev/null
+++ b/test/cloneDeep.js
@@ -0,0 +1,22 @@
+'use strict'
+
+/* eslint-env mocha */
+
+const assert = require('assert')
+const { cloneDeep } = require('../index')
+
+describe('cloneDeep', () => {
+  it('should deep clone objects', () => {
+    const obj = { foo: 1, bar: { baz: 'a' } }
+    const clone = cloneDeep(obj)
+    assert.deepStrictEqual(obj, clone)
+    assert.notStrictEqual(obj, clone)
+  })
+
+  it('should deep clone arrays', () => {
+    const obj = [1, [2, 3]]
+    const clone = cloneDeep(obj)
+    assert.deepStrictEqual(obj, clone)
+    assert.notStrictEqual(obj, clone)
+  })
+})