diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index dc1d3f4a..da6e7b15 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -6,6 +6,21 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
+## [v1.0.0](https://github.com/gopinath-langote/1build/releases/tag/v1.0.0) | 2019-06-05 | [Linked Issues](https://github.com/gopinath-langote/1build/milestone/4?closed=1) | [PyPi 1.0.0](https://pypi.org/project/1build/1.0.0/)
+
+### Added
+- Introduce python argument parser
+- `-h` or `--help` - show help message
+- `-l` or `--list` - List all the commands available in current directory configuration `1build.yaml` file.
+- [Contribution Guide](https://github.com/gopinath-langote/1build/blob/master/CONTRIBUTING.md) for developers.
+- Introduce [changelog](https://github.com/gopinath-langote/1build/blob/master/docs/CHANGELOG.md) for the releases
+
+
+### Changed
+- Readme to include Contribution, Versioning, Changelog, Authors, Contributors.
+- Readme badges to make center alignment
+
+
 ## [v0.0.5](https://github.com/gopinath-langote/1build/releases/tag/v0.0.5) | 2019-05-27 | [Linked Issues](https://github.com/gopinath-langote/1build/milestone/3?closed=1) | [PyPi 0.0.5](https://pypi.org/project/1build/0.0.5/)
 
 ### Added