diff --git a/AUTHORS.txt b/AUTHORS.txt
index f23d3eb..5c790cc 100644
--- a/AUTHORS.txt
+++ b/AUTHORS.txt
@@ -14,7 +14,9 @@ David Hewson <dev@daveid.co.uk>
 David Ross <daboross@daboross.net>
 David Tolnay <dtolnay@gmail.com>
 David Willie <david.willie.1@gmail.com>
+Eric Findlay <e.findlay@protonmail.ch>
 Eunchong Yu <kroisse@gmail.com>
+Frans Skarman <frans.skarman@gmail.com>
 Huon Wilson <dbau.pp+github@gmail.com>
 Jim Turner <jturner314@gmail.com>
 Jisoo Park <xxxyel@gmail.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1915bf5..30b7381 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,28 @@ 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.
 
+## 0.3.1 (2017-05-02)
+
+### Added
+
+- `Weekday` now implements `FromStr`, `Serialize` and `Deserialize`. (#113)
+
+  The syntax is identical to `%A`, i.e. either the shortest or the longest form of English names.
+
+### Changed
+
+- Serde 1.0 is now supported. (#142)
+
+  This is technically a breaking change because Serde 0.9 and 1.0 are not compatible,
+  but this time we decided not to issue a minor version because
+  we have already seen Serde 0.8 and 0.9 compatibility problems even after 0.3.0 and
+  a new minor version turned out to be not very helpful for this kind of issues.
+
+### Fixed
+
+- Fixed a bug that the leap second can be mapped wrongly in the local time zone.
+  Only occurs when the local time zone is behind UTC. (#130)
+
 ## 0.3.0 (2017-02-07)
 
 The project has moved to the [Chronotope](https://github.com/chronotope/) organization.
diff --git a/Cargo.toml b/Cargo.toml
index 6196612..31eb1bf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chrono"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Kang Seonghoon <public+rust@mearie.org>"]
 
 description = "Date and time library for Rust"
diff --git a/src/lib.rs b/src/lib.rs
index d5096b4..0b66e91 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,7 @@
 // This is a part of Chrono.
 // See README.md and LICENSE.txt for details.
 
-//! # Chrono 0.3.0
+//! # Chrono 0.3.1
 //!
 //! Date and time handling for Rust.
 //! It aims to be a feature-complete superset of
@@ -110,19 +110,19 @@
 //! or in the local time zone
 //! ([`Local::now()`](./offset/local/struct.Local.html#method.now)).
 //!
-//! ~~~~ {.rust}
+//! ```rust
 //! use chrono::prelude::*;
 //!
 //! let utc: DateTime<UTC> = UTC::now();       // e.g. `2014-11-28T12:45:59.324310806Z`
 //! let local: DateTime<Local> = Local::now(); // e.g. `2014-11-28T21:45:59.324310806+09:00`
 //! # let _ = utc; let _ = local;
-//! ~~~~
+//! ```
 //!
 //! Alternatively, you can create your own date and time.
 //! This is a bit verbose due to Rust's lack of function and method overloading,
 //! but in turn we get a rich combination of initialization methods.
 //!
-//! ~~~~ {.rust}
+//! ```rust
 //! use chrono::prelude::*;
 //! use chrono::offset::LocalResult;
 //!
@@ -148,7 +148,7 @@
 //! let fixed_dt = FixedOffset::east(9 * 3600).ymd(2014, 7, 8).and_hms_milli(18, 10, 11, 12);
 //! assert_eq!(dt, fixed_dt);
 //! # let _ = local_dt;
-//! ~~~~
+//! ```
 //!
 //! Various properties are available to the date and time, and can be altered individually.
 //! Most of them are defined in the traits [`Datelike`](./trait.Datelike.html) and
@@ -156,7 +156,7 @@
 //! Addition and subtraction is also supported.
 //! The following illustrates most supported operations to the date and time:
 //!
-//! ~~~~ {.rust}
+//! ```rust
 //! # extern crate chrono; extern crate time; fn main() {
 //! use chrono::prelude::*;
 //! use time::Duration;
@@ -196,7 +196,7 @@
 //! assert_eq!(UTC.ymd(1970, 1, 1).and_hms(0, 0, 0) - Duration::seconds(1_000_000_000),
 //!            UTC.ymd(1938, 4, 24).and_hms(22, 13, 20));
 //! # }
-//! ~~~~
+//! ```
 //!
 //! Formatting is done via the [`format`](./datetime/struct.DateTime.html#method.format) method,
 //! which format is equivalent to the familiar `strftime` format.
@@ -208,7 +208,7 @@
 //! [`to_rfc3339`](./datetime/struct.DateTime.html#method.to_rfc3339) methods
 //! for well-known formats.
 //!
-//! ~~~~ {.rust}
+//! ```rust
 //! use chrono::prelude::*;
 //!
 //! let dt = UTC.ymd(2014, 11, 28).and_hms(12, 0, 9);
@@ -220,7 +220,7 @@
 //! assert_eq!(dt.to_rfc2822(), "Fri, 28 Nov 2014 12:00:09 +0000");
 //! assert_eq!(dt.to_rfc3339(), "2014-11-28T12:00:09+00:00");
 //! assert_eq!(format!("{:?}", dt), "2014-11-28T12:00:09Z");
-//! ~~~~
+//! ```
 //!
 //! Parsing can be done with three methods:
 //!
@@ -249,7 +249,7 @@
 //! More detailed control over the parsing process is available via
 //! [`format`](./format/index.html) module.
 //!
-//! ~~~~ {.rust}
+//! ```rust
 //! use chrono::prelude::*;
 //!
 //! let dt = UTC.ymd(2014, 11, 28).and_hms(12, 0, 9);
@@ -277,7 +277,7 @@
 //! assert!(UTC.datetime_from_str("Fri Nov 28 12:00:09", "%a %b %e %T").is_err());
 //! // oops, the weekday is incorrect!
 //! assert!(UTC.datetime_from_str("Sat Nov 28 12:00:09 2014", "%a %b %e %T %Y").is_err());
-//! ~~~~
+//! ```
 //!
 //! ### Individual date
 //!
@@ -285,7 +285,7 @@
 //! It also has time zones attached, and have to be constructed via time zones.
 //! Most operations available to `DateTime` are also available to `Date` whenever appropriate.
 //!
-//! ~~~~ {.rust}
+//! ```rust
 //! use chrono::prelude::*;
 //! use chrono::offset::LocalResult;
 //!
@@ -297,7 +297,7 @@
 //! assert_eq!(UTC.ymd_opt(2014, 11, 31), LocalResult::None);
 //! assert_eq!(UTC.ymd(2014, 11, 28).and_hms_milli(7, 8, 9, 10).format("%H%M%S").to_string(),
 //!            "070809");
-//! ~~~~
+//! ```
 //!
 //! There is no timezone-aware `Time` due to the lack of usefulness and also the complexity.
 //!