diff --git a/CITATION.cff b/CITATION.cff
new file mode 100644
index 0000000..f83ad63
--- /dev/null
+++ b/CITATION.cff
@@ -0,0 +1,10 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+authors:
+  - family-names: Sahu
+    given-names: Subhajit
+    orcid: https://orcid.org/0000-0001-5140-6578
+title: "nodef/extra-object: A collection of methods for working with Objects"
+version: 3.1.0
+doi: 10.5281/zenodo.7419320
+date-released: 2022-12-09
diff --git a/README.md b/README.md
index 451382c..c0e4e65 100644
--- a/README.md
+++ b/README.md
@@ -192,6 +192,7 @@ var x = {a: 1, b: 2, c: 3};
 
 [![](https://i.imgur.com/f9LT8Xu.png)](https://www.youtube.com/watch?v=nrUszqrlvi8)
 [![ORG](https://img.shields.io/badge/org-nodef-green?logo=Org)](https://nodef.github.io)
+[![DOI](https://zenodo.org/badge/133806024.svg)](https://zenodo.org/badge/latestdoi/133806024)
 [![Coverage Status](https://coveralls.io/repos/github/nodef/extra-object/badge.svg?branch=master)](https://coveralls.io/github/nodef/extra-object?branch=master)
 [![Test Coverage](https://api.codeclimate.com/v1/badges/27933753bc28ffe2e9dd/test_coverage)](https://codeclimate.com/github/nodef/extra-object/test_coverage)
 [![Maintainability](https://api.codeclimate.com/v1/badges/27933753bc28ffe2e9dd/maintainability)](https://codeclimate.com/github/nodef/extra-object/maintainability)
diff --git a/package-lock.json b/package-lock.json
index 2f1a0f1..d262125 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "extra-object",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "extra-object",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "license": "MIT",
       "devDependencies": {
         "@rollup/plugin-commonjs": "^23.0.4",
diff --git a/package.json b/package.json
index fdb8d6f..4ee13ee 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "extra-object",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "A collection of methods for working with Objects.",
   "main": "index.js",
   "module": "index.mjs",