diff --git a/CHANGELOG.md b/CHANGELOG.md
index b84c8a4..80a56a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,9 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.0.0]
+
 ### Added
 
-- first version with `createOpaqueAPI` returning `toOpaque`, `fromOpaque` and
-  `isOpaque
+-   first version with `createOpaqueAPI` returning `toOpaque`, `fromOpaque` and
+    \`isOpaque
+
+[Unreleased]: https://github.com/iadvize/opaque-type-library/compare/v1.0.0...HEAD
 
-[Unreleased]: https://github.com/iadvize/opaque-type-library/compare/v0.0.1...HEAD
+[1.0.0]: https://github.com/iadvize/opaque-type-library/compare/v0.0.1...v1.0.0
diff --git a/package.json b/package.json
index 827a2cf..458073d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@iadvize-oss/opaque-type",
-  "version": "0.0.1",
+  "version": "1.0.0",
   "description": "Functional opaque type api for Typescript and Javascript",
   "main": "dist/index.js",
   "module": "esm/index.js",