diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f7e8ea..64d807c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,13 @@ Chrono obeys the principle of [Semantic Versioning](http://semver.org/).
 There were/are numerous minor versions before 1.0 due to the language changes.
 Versions with only mechnical changes will be omitted from the following list.
 
+## 0.2.22 (2016-04-22)
+
+### Fixed
+
+- `%.6f` and `%.9f` used to print only three digits when the nanosecond part is zero. (#71)
+- The documentation for `%+` has been updated to reflect the current status. (#71)
+
 ## 0.2.21 (2016-03-29)
 
 ### Fixed
diff --git a/Cargo.toml b/Cargo.toml
index 599b64c..212aa60 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chrono"
-version = "0.2.21"
+version = "0.2.22"
 authors = ["Kang Seonghoon <public+rust@mearie.org>"]
 
 description = "Date and time library for Rust"
diff --git a/README.md b/README.md
index b6acccd..423e886 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[Chrono][doc] 0.2.21
+[Chrono][doc] 0.2.22
 ====================
 
 [![Chrono on Travis CI][travis-image]][travis]
diff --git a/src/lib.rs b/src/lib.rs
index 8ccc1ad..f3a6e5d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,7 @@
 // Copyright (c) 2014-2015, Kang Seonghoon.
 // See README.md and LICENSE.txt for details.
 
-//! # Chrono 0.2.21
+//! # Chrono 0.2.22
 //!
 //! Date and time handling for Rust. (also known as `rust-chrono`)
 //! It aims to be a feature-complete superset of