diff --git a/DataValuesJavaScript.php b/DataValuesJavaScript.php
index 6d459c3..538f00f 100644
--- a/DataValuesJavaScript.php
+++ b/DataValuesJavaScript.php
@@ -7,7 +7,7 @@
 	return 1;
 }
 
-define( 'DATA_VALUES_JAVASCRIPT_VERSION', '0.8.2' );
+define( 'DATA_VALUES_JAVASCRIPT_VERSION', '0.8.3' );
 
 // Include the composer autoloader if it is present.
 if ( is_readable( __DIR__ . '/vendor/autoload.php' ) ) {
diff --git a/README.md b/README.md
index 11693a3..9134ec4 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,10 @@ On [Packagist](https://packagist.org/packages/data-values/javascript):
 
 ## Release notes
 
+### 0.8.3 (2016-11-07)
+* `QuantityValue` now supports unknown upper and lower bounds, required for compatibility with
+  DataValues Number 0.8.0.
+
 ### 0.8.2 (2016-04-12)
 * Added 1/10000 of an arcsecond as a known precision to `globeCoordinate.Formatter`.
 * Fixed `globeCoordinate.Formatter.PRECISIONTEXT` not properly supporting precisions lower than