diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..f0864f8
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,23 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+<!-- next-header -->
+
+## [Unreleased]
+
+## [0.2.0] - 2022-06-11
+### Added
+- Json Web Token
+
+## [0.1.0] - 2022-06-11
+### Added
+- Sha1, Sha256, Sha512 hasher
+
+<!-- next-url -->
+[Unreleased]: https://github.com/MedzikUser/imgurs/compare/v0.2.0...HEAD
+[0.2.0]: https://github.com/MedzikUser/imgurs/commits/v0.2.0
+[0.1.0]: https://github.com/MedzikUser/imgurs/commits/v0.1.0
diff --git a/src/jsonwebtoken.rs b/src/jsonwebtoken.rs
index 28aa067..84c6f5f 100644
--- a/src/jsonwebtoken.rs
+++ b/src/jsonwebtoken.rs
@@ -1,10 +1,31 @@
+//! Module for creating and decoding json web token.
+//!
+//! **Required `jwt` feature!**
+//!
+//! Examples:
+//! ```
+//! use crypto_utils::jsonwebtoken::{Claims, Token};
+//!
+//! let secret = b"secret";
+//! let user_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
+//!
+//! // create claims
+//! let claims = Claims::new(user_id, 24);
+//!
+//! // create token
+//! let token = Token::new(secret, claims).unwrap();
+//!
+//! // decode token
+//! let decoded = Token::decode(secret, token.encoded).unwrap();
+//! ```
+
 use chrono::{Duration, Utc};
 use jsonwebtoken::{
     errors::Error, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation,
 };
 use serde::{Deserialize, Serialize};
 
-/// Json Web Token Claims
+/// Token Claims
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct Claims {
     /// Token value
diff --git a/src/lib.rs b/src/lib.rs
index 6c0abaa..906da5f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -61,6 +61,7 @@
 //! ```
 //! use crypto_utils::jsonwebtoken::{Claims, Token};
 //!
+//! let secret = b"secret";
 //! let user_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
 //!
 //! // create claims