diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..726f59d
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,23 @@
+# Changelog
+
+All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
+
+## [0.4.0](https://github.com/ialopezg/custom-error-service/compare/v0.3.1...v0.4.0) (2022-07-11)
+
+
+### Features
+
+* add Error, HttpException, and RuntimeException ([a789eae](https://github.com/ialopezg/custom-error-service/commit/a789eaea6fd1d2e9eebe93e493db7a399553ea99))
+* refactor code & add initial test ([6e55539](https://github.com/ialopezg/custom-error-service/commit/6e55539da5b0931e9d1efa91b5ab91fd763e9bf2))
+* update example dependencies and paths ([34346a2](https://github.com/ialopezg/custom-error-service/commit/34346a2325c5783b6688802bd0cfbd9341ae601b))
+
+
+### Bug Fixes
+
+* AppVeyor CI Action hotfix ([57b84c1](https://github.com/ialopezg/custom-error-service/commit/57b84c1e385e75a89a1d5b000e530145827dc089))
+* AppVeyor CI Action hotfix ([26a5250](https://github.com/ialopezg/custom-error-service/commit/26a52506f95071de9f9dc8cd37245d9218c4ddfb))
+* code refactoring ([0f2bd4f](https://github.com/ialopezg/custom-error-service/commit/0f2bd4f4d274ba5e67083e8c7fa6d2a66f187731))
+* module export links ([5b426eb](https://github.com/ialopezg/custom-error-service/commit/5b426eb5bc95f2e4db83ffdfd5646a2c17c45d40))
+* normalize class names & build environment ([eeb7f97](https://github.com/ialopezg/custom-error-service/commit/eeb7f978e74d4375bf29483b4e39ce81bf844c65))
+* sort paths and names ([f5c9ab5](https://github.com/ialopezg/custom-error-service/commit/f5c9ab5b98a2b085fca58467fc346a8e03bfaa5d))
+* update example ([ac26bff](https://github.com/ialopezg/custom-error-service/commit/ac26bff421f255fd8aef70dd4234974be0f3c725))
diff --git a/package-lock.json b/package-lock.json
index befb7bf..a718701 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "custom-error-service",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index e303faf..a9e9536 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "custom-error-service",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "description": "A toolset for NodeJS to handling Client and Server Side HTTP errors",
   "main": "lib/index.js",
   "module": "lib/index.es.js",