diff --git a/CHANGELOG.md b/CHANGELOG.md
index d861bab..02fd8a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.15.14] - 2023-02-28
+- Fixed: invalid return type
+
 ## [1.15.13] - 2023-02-22
 - Fixed: invalid syntax
 
diff --git a/library/Haste/Cache/Cache.php b/library/Haste/Cache/Cache.php
index b5f72fa..0b3bdae 100644
--- a/library/Haste/Cache/Cache.php
+++ b/library/Haste/Cache/Cache.php
@@ -35,7 +35,7 @@ public function __construct(string $driver = 'auto', $config = null)
      *
      * @return Cache The object instance
      */
-    public static function getInstance($config = null): Cache
+    public static function getInstance($config = null)
     {
         if (static::$objInstance === null) {
             static::$objInstance = CacheManager::getInstance(static::$driver, self::getOptions($config));