diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad552d03f..37d29de13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-### [Unreleased]
+### [0.1.0] 2015-07-23
 
   * Added: `Composer\Semver\Comparator`, various methods to compare versions.
   * Added: various documents such as README.md, LICENSE, etc.
diff --git a/composer.json b/composer.json
index e9e228c29..b996186f2 100644
--- a/composer.json
+++ b/composer.json
@@ -48,7 +48,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.0-dev"
+            "dev-master": "0.1-dev"
         }
     },
     "scripts": {