diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27cb0ca..67773d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
 # Changelog
 
 All notable changes to `steuernummer` will be documented in this file.
+
+## v1.0.0. - 2024-07-09
+
+- Normalizes, denormalizes and validates German tax numbers
+- Returns human readable errors for invalid input
+- Includes multiple helpers with `functions.php` (PSR-4 autoladed)