diff --git a/CHANGELOG.md b/CHANGELOG.md
index 774408b..4f747fb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+-
+
+## [1.0.0] - 2026-08-20
+
+First stable release: a dependency-free TOML 1.0 parser and encoder for Go that
+uses only the standard library and passes the entire
+[toml-test](https://github.com/toml-lang/toml-test) suite
+(**185 valid and 371 invalid cases, 0 failures**).
+
+### Added
+
 **Parsing**
 
 - `Parse(data []byte) (map[string]any, error)`: decode a TOML document into an