diff --git a/app/Config/Boot/production.php b/app/Config/Boot/production.php
index 73c7c60afbc7..1822cf583f82 100644
--- a/app/Config/Boot/production.php
+++ b/app/Config/Boot/production.php
@@ -9,8 +9,10 @@
  |
  | If you set 'display_errors' to '1', CI4's detailed error report will show.
  */
+error_reporting(E_ALL & ~E_DEPRECATED);
+// If you want to suppress more types of errors.
+// error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_STRICT & ~E_USER_NOTICE & ~E_USER_DEPRECATED);
 ini_set('display_errors', '0');
-error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_STRICT & ~E_USER_NOTICE & ~E_USER_DEPRECATED);
 
 /*
  |--------------------------------------------------------------------------
diff --git a/user_guide_src/source/changelogs/v4.5.0.rst b/user_guide_src/source/changelogs/v4.5.0.rst
index 31c8b3bd114a..b25bb473b5a3 100644
--- a/user_guide_src/source/changelogs/v4.5.0.rst
+++ b/user_guide_src/source/changelogs/v4.5.0.rst
@@ -313,6 +313,9 @@ Changes
 - **Config:**
     - ``Config\Feature::$multipleFilters`` has been removed, because now
       :ref:`multiple-filters` are always enabled.
+    - The default error level in the production environment
+      (**app/Config/Boot/production.php**) has been changed to ``E_ALL & ~E_DEPRECATED``
+      to match the default **php.ini** for production.
 - **RouteCollection:** The HTTP method keys in the protected property ``$routes``
   has been fixed from lowercase to uppercase.
 
diff --git a/user_guide_src/source/installation/upgrade_450.rst b/user_guide_src/source/installation/upgrade_450.rst
index c81ad21ab1d7..6b0f88a93ea4 100644
--- a/user_guide_src/source/installation/upgrade_450.rst
+++ b/user_guide_src/source/installation/upgrade_450.rst
@@ -255,6 +255,8 @@ The  ``'toolbar'`` in the ``$global['after']`` was removed.
 Others
 ^^^^^^
 
+- app/Config/Boot/production.php
+    - The default error level to ``error_reporting()`` has been changed to ``E_ALL & ~E_DEPRECATED``.
 - app/Config/Database.php
     - The default value of ``charset`` in ``$default`` has been change to ``utf8mb4``.
     - The default value of ``DBCollat`` in ``$default`` has been change to ``utf8mb4_general_ci``.