diff --git a/README.md b/README.md
index d2b309e..ccce753 100644
--- a/README.md
+++ b/README.md
@@ -108,9 +108,12 @@ The composer.json file is provided to allow you to deploy the opcache gui a litt
 
 ## Releases
 
-**Version 2.5.2**\
+**Version 2.5.3**\
 CSS class names have been added and style rules updated to use them.
 
+**Version 2.5.2**\
+Hotfix for the optimisation_level values that was put out in v2.5.1.
+
 **Version 2.5.1**\
 A couple bug fixes and improvement on the optimisation level details.
 * optimisation_level now shows the levels of optimisations that will be performed rather than an abstract number
diff --git a/index.php b/index.php
index b90777f..868209c 100644
--- a/index.php
+++ b/index.php
@@ -8,7 +8,7 @@ namespace OpcacheGui;
  * A simple but effective single-file GUI for the OPcache PHP extension.
  *
  * @author Andrew Collington, andy@amnuts.com
- * @version 2.5.2
+ * @version 2.5.3
  * @link https://github.com/amnuts/opcache-gui
  * @license MIT, http://acollington.mit-license.org/
  */
@@ -54,7 +54,7 @@ header('Pragma: no-cache');
 
 class OpCacheService
 {
-    const VERSION = '2.5.2';
+    const VERSION = '2.5.3';
 
     protected $data;
     protected $options;