diff --git a/CHANGELOG.md b/CHANGELOG.md
index 064d464..57b3552 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.0 - Aug 23, 2022
+
+- This is our first stable release.
+
 ## 0.0.1 - Apr 27, 2021
 
 - Initial version, created by Stagehand
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 13c2362..1b41553 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -28,7 +28,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.0.0-beta03"
+    version: "1.0.0"
   http:
     dependency: "direct main"
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 3f7c8c9..53ac340 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -3,7 +3,7 @@ description: >
   Either monad for Dart language and Flutter framework.
   Type-safe error handling, railway oriented programming.
   Supports Monad comprehensions, async map, async flatMap.
-version: 1.0.0-beta06
+version: 1.0.0
 homepage: https://github.com/hoc081098/dart_either.git
 repository: https://github.com/hoc081098/dart_either.git
 issue_tracker: https://github.com/hoc081098/dart_either/issues