diff --git a/system/Exceptions/CastException.php b/system/Exceptions/CastException.php
deleted file mode 100644
index 139c1c5fc725..000000000000
--- a/system/Exceptions/CastException.php
+++ /dev/null
@@ -1,57 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * This file is part of CodeIgniter 4 framework.
- *
- * (c) CodeIgniter Foundation <admin@codeigniter.com>
- *
- * For the full copyright and license information, please view
- * the LICENSE file that was distributed with this source code.
- */
-
-namespace CodeIgniter\Exceptions;
-
-/**
- * Cast Exceptions.
- *
- * @deprecated use CodeIgniter\Entity\Exceptions\CastException instead.
- *
- * @codeCoverageIgnore
- */
-class CastException extends CriticalError implements HasExitCodeInterface
-{
-    use DebugTraceableTrait;
-
-    public function getExitCode(): int
-    {
-        return EXIT_CONFIG;
-    }
-
-    /**
-     * @return static
-     */
-    public static function forInvalidJsonFormatException(int $error)
-    {
-        switch ($error) {
-            case JSON_ERROR_DEPTH:
-                return new static(lang('Cast.jsonErrorDepth'));
-
-            case JSON_ERROR_STATE_MISMATCH:
-                return new static(lang('Cast.jsonErrorStateMismatch'));
-
-            case JSON_ERROR_CTRL_CHAR:
-                return new static(lang('Cast.jsonErrorCtrlChar'));
-
-            case JSON_ERROR_SYNTAX:
-                return new static(lang('Cast.jsonErrorSyntax'));
-
-            case JSON_ERROR_UTF8:
-                return new static(lang('Cast.jsonErrorUtf8'));
-
-            default:
-                return new static(lang('Cast.jsonErrorUnknown'));
-        }
-    }
-}
diff --git a/user_guide_src/source/changelogs/v4.5.0.rst b/user_guide_src/source/changelogs/v4.5.0.rst
index 52c49500fe91..55a5e6cfaad7 100644
--- a/user_guide_src/source/changelogs/v4.5.0.rst
+++ b/user_guide_src/source/changelogs/v4.5.0.rst
@@ -223,6 +223,7 @@ Others
 
 - **Config:** The deprecated ``CodeIgniter\Config\Config`` class has been removed.
 - **Controller:** The deprecated ``Controller::loadHelpers()`` method has been removed.
+- **Exceptions:** The deprecated ``CodeIgniter\Exceptions\CastException`` class has been removed.
 
 Enhancements
 ************