diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ae5419..1e2780b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
 # Changelog
+## v0.6.1
+* Improved the documentation. No actual code changes.
 ## v0.6.0
 * Using RustCrypto's SHA implementation by default, instead of Ring.
 * Improved the documentation.
diff --git a/Cargo.toml b/Cargo.toml
index 9b28d88..a9b6627 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "totp_rfc6238"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["KaneGreen <737445366KG@Gmail.com>"]
 edition = "2021"
 license = "MIT OR Apache-2.0"
diff --git a/README.md b/README.md
index 4a3a699..73027bb 100644
--- a/README.md
+++ b/README.md
@@ -8,14 +8,14 @@ A rust crate for generating TOTP codes (tokens) defined in [RFC 6238](https://to
 ## Features of this crate
 * Both low-level and high-level APIs are provided.
 * The length of the codes, the initial counter time (T0), update time interval
-(period) and hash algorithm are configurable.
-* HMAC algorithms are implemented by [ring](https://crates.io/crates/ring).
+  (period) and hash algorithm are configurable.
+* HMAC algorithms are implemented by [RustCrypto](https://github.com/RustCrypto) or [ring](https://crates.io/crates/ring).
 * Read or write "[Key Uri Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)"
-(URIs start with `otpauth://totp/`) (the `oathuri` feature gate).
+  (URIs start with `otpauth://totp/`) (the `oathuri` feature gate).
 * Read or write `key` from base32-encoded string (the `oathuri` feature gate).
 
 ### Select SHA implementation
-* using [RustCrypto](https://github.com/RustCrypto/MACs/tree/master/hmac)'s implementation (default)
+* using [RustCrypto](https://github.com/RustCrypto/hashes)'s implementation (default)
     ```toml
     [dependencies]
     totp_rfc6238 = "0.6"
@@ -38,7 +38,7 @@ fn main() {
     // 30 seconds, starting at "Jan 01 1970 00:00:00 UTC", using HMAC-SHA1.
     let mut totp_generator = TotpGenerator::new().build();
 
-    // Assuming you read the key from some secure area
+    // Assuming you have read the key from somewhere secure
     let key = b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890+/";
 
     let output1 = totp_generator.get_code(key);
@@ -70,6 +70,7 @@ fn main() {
 
 ## Changelog
 See [here](./CHANGELOG.md).
+
 ### Incompatible API breaking changes
 The version number lower than `1.0.0` should be regarded as an unstable version
 of the API. Therefore, some version updates may contain incompatible API
@@ -89,6 +90,7 @@ The codes of this crate has not been audited.
 
 ## Features that may be related to but NOT implemented in this crate
 * Read or write QR codes.
+* HMAC-based One-Time Password (HOTP) algorithm as defined in RFC 4226.
 
 ## License
 This tool is primarily distributed under the terms of both the MIT license
@@ -100,4 +102,4 @@ See [LICENSE-APACHE](LICENSE-APACHE), [LICENSE-MIT](LICENSE-MIT) for details.
 1. Any contribution intentionally submitted for inclusion in totp_rfc6238 by
   you, as defined in the Apache-2.0 license, shall be dual licensed as above,
   without any additional terms or conditions.
-2. Pull requests are always welcome.
\ No newline at end of file
+2. Pull requests are always welcome.
diff --git a/src/lib.rs b/src/lib.rs
index 092506c..1a5214f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,7 +5,7 @@
 //! * Both low-level and high-level APIs are provided.
 //! * The length of the codes, the initial counter time (T0), update time
 //!   interval (period) and hash algorithm are configurable.
-//! * HMAC algorithms are implemented by [ring](https://crates.io/crates/ring).
+//! * HMAC algorithms are implemented by [RustCrypto](https://github.com/RustCrypto) or [ring](https://crates.io/crates/ring).
 //! * Read or write "[Key Uri Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)"
 //!   (URIs start with `otpauth://totp/`) (the `oathuri` feature gate).
 //! * Read or write `key` from base32-encoded string (the `oathuri` feature
diff --git a/src/oath_uri.rs b/src/oath_uri.rs
index d8ce37f..efd6aad 100644
--- a/src/oath_uri.rs
+++ b/src/oath_uri.rs
@@ -4,7 +4,7 @@
 //! ```toml
 //! # Cargo.toml
 //! [dependencies]
-//! totp_rfc6238 = { version = "0.4", features = [ "oathuri" ]}
+//! totp_rfc6238 = { version = "0.6", features = [ "oathuri" ]}
 //! ```
 //!
 //! The functions and methods in this module will automatically try to