diff --git a/DataValuesJavascript.php b/DataValuesJavascript.php
index 25bc095..c198260 100644
--- a/DataValuesJavascript.php
+++ b/DataValuesJavascript.php
@@ -7,7 +7,7 @@
 	return 1;
 }
 
-define( 'DATA_VALUES_JAVASCRIPT_VERSION', '0.5.1 alpha' );
+define( 'DATA_VALUES_JAVASCRIPT_VERSION', '0.5.1' );
 
 // Include the composer autoloader if it is present.
 if ( is_readable( __DIR__ . '/vendor/autoload.php' ) ) {
diff --git a/README.md b/README.md
index b468e30..6a0614a 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ On [Packagist](https://packagist.org/packages/data-values/javascript):
 
 ## Release notes
 
-### 0.5.1 (dev)
+### 0.5.1 (2014-06-04)
 
 #### Bugfixes