diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a56b50..9a70aea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## 0.4.0 - 2018-05-25
+
+* Directly use Reason parser api instead of forking the refmt exe for each file.
+  Message extraction is now lightning fast! 😀
+* Command line args
+  * allow multiple source directories to be specified
+  * support -v and -help options
+* Support message extraction when `open ReactIntl;` was used.
+* Added tests + Travis CI.
+
 ## 0.3.0 - 2018-05-16
 
 * Support `[@intl.messages]` for marking messages for extraction.
@@ -11,4 +21,4 @@
 
 ## 0.1.0 - 2018-05-13
 
-Initial Release.
+* Initial Release.
diff --git a/README.md b/README.md
index 03e7506..7feb454 100644
--- a/README.md
+++ b/README.md
@@ -3,9 +3,21 @@
 [![Build Status](https://travis-ci.org/cknitt/bs-react-intl-extractor.svg?branch=master)](https://travis-ci.org/cknitt/bs-react-intl-extractor)
 
 Extracts messages for localization from [Reason] source files.
+This assumes that you are using the [bs-react-intl] bindings for [react-intl].
 
-This assumes that you are using the [bs-react-intl] bindings for [react-intl]
-and your source files define formatted messages in one of the following three ways:
+## Installation
+
+macOS and Linux binaries are available for download on the [releases page].
+
+## Usage
+
+```sh
+bs-react-intl-extractor [path...]
+```
+
+where `path` is a Reason source file or a directory containing Reason source files. Multiple files/directories may be specified.
+
+Formatted messages may be defined in your source files in one of the following three ways:
 
 1.  inline in `FormattedMessage`:
 
@@ -91,26 +103,6 @@ The output (a JSON array of all extracted messages sorted by id) is written to s
 ]
 ```
 
-## Download
-
-macOS and Linux binaries are available for download on the [releases page].
-
-After you have downloaded a binary, make it executable using `chmod +x`.
-
-## Usage
-
-```sh
-bs-react-intl-extractor directory ...
-```
-
-where `directory` is a directory containing Reason source files. Multiple directories may be specified.
-
-The reason formatter (`refmt`) needs to be on the path.
-
-## Known Issues
-
-Performance is not optimal right now as the `refmt` executable is forked for the processing of each file.
-
 ## How to build
 
 Install [esy] as follows: