diff --git a/CHANGELOG.md b/CHANGELOG.md
index 133f5ee..447c87e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased] -
 
+## [4.0.0] - 2021-02-25
+
 * Add support for domain translation (#4)
 * TransNode constructor signature changed, new $domain parameter `?Node $notes, ?Node $domain = null, int $lineno` (#4)
 * TransNode constructor signature changed, new $context parameter `?AbstractExpression $count, ?Node $context = null, ?Node $notes` (#6)
@@ -9,6 +11,8 @@
 * Add support for enabling `phpmyadmin/motranslator` or complex non php-gettext supported functions (#6)
 * Add support for custom notes labels (#6)
 * Make debug info disabled by default, `TransNode::$enableAddDebugInfo = true;` will add it back
+* Some slight performance improvements
+* Added tests for all the code
 
 ## [3.0.0] - 2020-06-14