diff --git a/CHANGELOG.md b/CHANGELOG.md
index 915b00f..05d80f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## [0.4.0] - Unreleased
+## [0.4.0] - 2015-12-02
 
 * Restore explicit reference to `vendor/bin` (previously removed in [#3]) within the pre-commit Git hook ([#11]). Props @leewillis77.
 * Added `--help` and `--version` options to the `wp-enforcer` command for easier usage (and setting us up for more fun options in the future, [#8]). Props @daveross.
diff --git a/composer.json b/composer.json
index 64dffea..b922a4c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
 	"name": "stevegrunwell/wp-enforcer",
 	"description": "Git hooks to encourage well-written WordPress.",
-	"version": "0.3.0",
+	"version": "0.4.0",
 	"authors": [
 		{
 			"name": "Steve Grunwell",