diff --git a/README.md b/README.md
index 54d03a87..3504b653 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ GNU Version 2 or Any Later Version
 
 ## Releases
 
-[Official Release Version: 2.5.2](https://github.com/ultimatemember/ultimatemember/releases/tag/2.5.2).
+[Official Release Version: 2.5.3](https://github.com/ultimatemember/ultimatemember/releases/tag/2.5.3).
 
 ## Changelog
 
diff --git a/includes/admin/core/class-admin-upgrade.php b/includes/admin/core/class-admin-upgrade.php
index 0c56bee0..ae30e70b 100644
--- a/includes/admin/core/class-admin-upgrade.php
+++ b/includes/admin/core/class-admin-upgrade.php
@@ -66,18 +66,24 @@ if ( ! class_exists( 'um\admin\core\Admin_Upgrade' ) ) {
 
 			if ( ! empty( $this->necessary_packages ) ) {
 				add_action( 'admin_menu', array( $this, 'admin_menu' ), 0 );
-
-				if ( defined( 'DOING_AJAX' ) && DOING_AJAX && current_user_can( 'manage_options' ) ) {
-					$this->init_packages_ajax();
-
-					add_action( 'wp_ajax_um_run_package', array( $this, 'ajax_run_package' ) );
-					add_action( 'wp_ajax_um_get_packages', array( $this, 'ajax_get_packages' ) );
-				}
+				add_action( 'wp_loaded', array( $this, 'initialize_upgrade_packages' ), 0 );
 			}
 
 			add_action( 'in_plugin_update_message-' . um_plugin, array( $this, 'in_plugin_update_message' ) );
 		}
 
+		/**
+		 * Initialize packages for upgrade process.
+		 * Note: Making that only for the 'manage_options' user and when AJAX running.
+		 */
+		public function initialize_upgrade_packages() {
+			if ( defined( 'DOING_AJAX' ) && DOING_AJAX && current_user_can( 'manage_options' ) ) {
+				$this->init_packages_ajax();
+
+				add_action( 'wp_ajax_um_run_package', array( $this, 'ajax_run_package' ) );
+				add_action( 'wp_ajax_um_get_packages', array( $this, 'ajax_get_packages' ) );
+			}
+		}
 
 		/**
 		 * Function for major updates
diff --git a/readme.txt b/readme.txt
index c711b56b..40281b63 100644
--- a/readme.txt
+++ b/readme.txt
@@ -7,7 +7,7 @@ Tags: community, member, membership, user-profile, user-registration
 Requires PHP: 5.6
 Requires at least: 5.0
 Tested up to: 6.1
-Stable tag: 2.5.2
+Stable tag: 2.5.3
 License: GNU Version 2 or Any Later Version
 License URI: http://www.gnu.org/licenses/gpl-3.0.txt
 
@@ -163,6 +163,12 @@ No, you do not need to use our plugin’s login or registration pages and can us
 * To learn more about version 2.1 please see this [docs](https://docs.ultimatemember.com/article/1512-upgrade-2-1-0)
 * UM2.1+ is a significant update to the Member Directories' code base from 2.0.x. Please make sure you take a full-site backup with restore point before updating the plugin
 
+= 2.5.3: December 19, 2022 =
+
+* Bugfixes:
+
+  - Fixed: Plugin upgrade DB initialization and PHP Fatal Error.
+
 = 2.5.2: December 14, 2022 =
 
 * Enhancements:
diff --git a/ultimate-member.php b/ultimate-member.php
index b251d51f..8f15c15f 100644
--- a/ultimate-member.php
+++ b/ultimate-member.php
@@ -3,7 +3,7 @@
 Plugin Name: Ultimate Member
 Plugin URI: http://ultimatemember.com/
 Description: The easiest way to create powerful online communities and beautiful user profiles with WordPress
-Version: 2.5.2
+Version: 2.5.3
 Author: Ultimate Member
 Author URI: http://ultimatemember.com/
 Text Domain: ultimate-member