diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8fb34c4..2b009b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Version [4.0.0](https://github.com/cedx/php-minifier/compare/v3.1.0...v4.0.0)
+- Breaking change: ported the source code to [Haxe](https://haxe.org).
+- Restored support for [CommonJS modules](https://nodejs.org/api/modules.html).
+
 ## Version [3.1.0](https://github.com/cedx/php-minifier/compare/v3.0.0...v3.1.0)
 - The `TransformMode` enumeration is now implemented as a frozen object.
 
diff --git a/haxelib.json b/haxelib.json
index 24e4361..64b7ede 100644
--- a/haxelib.json
+++ b/haxelib.json
@@ -5,7 +5,7 @@
 	"description": "Minify PHP source code by removing comments and whitespace.",
 	"license": "MIT",
 	"name": "php_minifier",
-	"releasenote": "Ported the source code to Haxe, fixed the program output when the compilation target is Neko.",
+	"releasenote": "Ported the source code to Haxe, restored support for CommonJS modules.",
 	"tags": ["compress", "gulp", "gulpplugin", "minify", "php"],
 	"url": "https://github.com/cedx/php-minifier",
 	"version": "4.0.0"