diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6c4cc5..2e73d1c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # ChangeLog
 
+- 2015/06/28 0.5.0 release.
+    - Fix the bug that text button overflows in material theme.
 - 2015/01/19 0.4.3 release.
     - [Add passSignificantEventAndConditions method.](https://github.com/hotchemi/Android-Rate/commit/9ca6375cbf25117a5f43afcc9651897d6bdf5888)
     - Improvement of internal processing.
diff --git a/LICENSE b/LICENSE
index a171793..43c9f5f 100755
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014 Shintaro Katafuchi
+Copyright (c) 2015 Shintaro Katafuchi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index fec8634..989f552 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,10 @@ Android-Rate
 
 Android-Rate is a library to help you promote your android app by prompting users to rate the app after using it for a few days.
 
-![screen shot](http://gifzo.net/BI5e2qMJVi0.gif)
+![screen shot](http://i.gyazo.com/286342ba215a515f2f443a7ce996cc92.gif)
 
 ## Getting Started
+
 ![Maven Badges](https://maven-badges.herokuapp.com/maven-central/com.github.hotchemi/android-rate/badge.svg)
 
 You can download from maven central.
@@ -27,6 +28,10 @@ Please try to move the [sample](https://github.com/hotchemi/Android-Rate/tree/ma
 
 [![javadoc.io](https://javadocio-badges.herokuapp.com/com.github.hotchemi/android-rate/badge.svg)](http://www.javadoc.io/doc/com.github.hotchemi/android-rate/)
 
+## Support
+
+Android-Rate supports over API level 9.
+
 ### Configuration
 
 Android-Rate provides methods to configure its behavior.
diff --git a/gradle.properties b/gradle.properties
index ec2594c..a508309 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
-VERSION_NAME=0.4.3
-VERSION_CODE=20
+VERSION_NAME=0.5.0
+VERSION_CODE=21
 GROUP=com.github.hotchemi
 POM_DESCRIPTION=Library for Android applications, which provides rating dialog.
 POM_URL=https://github.com/hotchemi/Android-Rate