diff --git a/wp-admin/includes/ajax-actions.php b/wp-admin/includes/ajax-actions.php
index 48e69fe0ac..2ed1d2e0ae 100644
--- a/wp-admin/includes/ajax-actions.php
+++ b/wp-admin/includes/ajax-actions.php
@@ -245,7 +245,7 @@ function wp_ajax_imgedit_preview() {
 
 	check_ajax_referer( "image_editor-$post_id" );
 
-	include_once ABSPATH . 'wp-admin/includes/image-edit.php';
+	require_once ABSPATH . 'wp-admin/includes/image-edit.php';
 
 	if ( ! stream_preview_image( $post_id ) ) {
 		wp_die( -1 );
@@ -2649,7 +2649,7 @@ function wp_ajax_image_editor() {
 	}
 
 	check_ajax_referer( "image_editor-$attachment_id" );
-	include_once ABSPATH . 'wp-admin/includes/image-edit.php';
+	require_once ABSPATH . 'wp-admin/includes/image-edit.php';
 
 	$msg = false;
 
@@ -4157,7 +4157,7 @@ function wp_ajax_install_theme() {
 	}
 
 	require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
-	include_once ABSPATH . 'wp-admin/includes/theme.php';
+	require_once ABSPATH . 'wp-admin/includes/theme.php';
 
 	$api = themes_api(
 		'theme_information',
@@ -4402,7 +4402,7 @@ function wp_ajax_delete_theme() {
 		wp_send_json_error( $status );
 	}
 
-	include_once ABSPATH . 'wp-admin/includes/theme.php';
+	require_once ABSPATH . 'wp-admin/includes/theme.php';
 
 	$result = delete_theme( $stylesheet );
 
@@ -4450,7 +4450,7 @@ function wp_ajax_install_plugin() {
 	}
 
 	require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
-	include_once ABSPATH . 'wp-admin/includes/plugin-install.php';
+	require_once ABSPATH . 'wp-admin/includes/plugin-install.php';
 
 	$api = plugins_api(
 		'plugin_information',
diff --git a/wp-admin/includes/class-wp-filesystem-ftpsockets.php b/wp-admin/includes/class-wp-filesystem-ftpsockets.php
index 1e213ea123..da578d0f2e 100644
--- a/wp-admin/includes/class-wp-filesystem-ftpsockets.php
+++ b/wp-admin/includes/class-wp-filesystem-ftpsockets.php
@@ -33,7 +33,7 @@ class WP_Filesystem_ftpsockets extends WP_Filesystem_Base {
 		$this->errors = new WP_Error();
 
 		// Check if possible to use ftp functions.
-		if ( ! include_once ABSPATH . 'wp-admin/includes/class-ftp.php' ) {
+		if ( ! require_once ABSPATH . 'wp-admin/includes/class-ftp.php' ) {
 			return;
 		}
 
diff --git a/wp-admin/includes/class-wp-plugin-install-list-table.php b/wp-admin/includes/class-wp-plugin-install-list-table.php
index e6a709e4d0..04013393ee 100644
--- a/wp-admin/includes/class-wp-plugin-install-list-table.php
+++ b/wp-admin/includes/class-wp-plugin-install-list-table.php
@@ -88,7 +88,7 @@ class WP_Plugin_Install_List_Table extends WP_List_Table {
 	 * @global string $term
 	 */
 	public function prepare_items() {
-		include_once ABSPATH . 'wp-admin/includes/plugin-install.php';
+		require_once ABSPATH . 'wp-admin/includes/plugin-install.php';
 
 		global $tabs, $tab, $paged, $type, $term;
 
diff --git a/wp-admin/includes/upgrade.php b/wp-admin/includes/upgrade.php
index 5bfc154f25..46f6286cad 100644
--- a/wp-admin/includes/upgrade.php
+++ b/wp-admin/includes/upgrade.php
@@ -351,7 +351,7 @@ Commenter avatars come from <a href="%s">Gravatar</a>.'
 			$privacy_policy_content = get_site_option( 'default_privacy_policy_content' );
 		} else {
 			if ( ! class_exists( 'WP_Privacy_Policy_Content' ) ) {
-				include_once ABSPATH . 'wp-admin/includes/class-wp-privacy-policy-content.php';
+				require_once ABSPATH . 'wp-admin/includes/class-wp-privacy-policy-content.php';
 			}
 
 			$privacy_policy_content = WP_Privacy_Policy_Content::get_default_content();
diff --git a/wp-admin/privacy-policy-guide.php b/wp-admin/privacy-policy-guide.php
index 7f649f0887..7e92a4dea6 100644
--- a/wp-admin/privacy-policy-guide.php
+++ b/wp-admin/privacy-policy-guide.php
@@ -14,7 +14,7 @@ if ( ! current_user_can( 'manage_privacy_options' ) ) {
 }
 
 if ( ! class_exists( 'WP_Privacy_Policy_Content' ) ) {
-	include_once ABSPATH . 'wp-admin/includes/class-wp-privacy-policy-content.php';
+	require_once ABSPATH . 'wp-admin/includes/class-wp-privacy-policy-content.php';
 }
 
 // Used in the HTML title tag.
diff --git a/wp-admin/update.php b/wp-admin/update.php
index a4a2abf8db..29480c2840 100644
--- a/wp-admin/update.php
+++ b/wp-admin/update.php
@@ -107,7 +107,7 @@ if ( isset( $_GET['action'] ) ) {
 			wp_die( __( 'Sorry, you are not allowed to install plugins on this site.' ) );
 		}
 
-		include_once ABSPATH . 'wp-admin/includes/plugin-install.php'; // For plugins_api().
+		require_once ABSPATH . 'wp-admin/includes/plugin-install.php'; // For plugins_api().
 
 		check_admin_referer( 'install-plugin_' . $plugin );
 		$api = plugins_api(
@@ -258,7 +258,7 @@ if ( isset( $_GET['action'] ) ) {
 			wp_die( __( 'Sorry, you are not allowed to install themes on this site.' ) );
 		}
 
-		include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php'; // For themes_api().
+		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php'; // For themes_api().
 
 		check_admin_referer( 'install-theme_' . $theme );
 		$api = themes_api(
diff --git a/wp-includes/blocks.php b/wp-includes/blocks.php
index 9dcd193214..8a20f29e3b 100644
--- a/wp-includes/blocks.php
+++ b/wp-includes/blocks.php
@@ -318,7 +318,7 @@ function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
 	 */
 	static $core_blocks_meta;
 	if ( ! $core_blocks_meta ) {
-		$core_blocks_meta = include_once ABSPATH . WPINC . '/blocks/blocks-json.php';
+		$core_blocks_meta = require_once ABSPATH . WPINC . '/blocks/blocks-json.php';
 	}
 
 	$metadata_file = ( ! str_ends_with( $file_or_folder, 'block.json' ) ) ?
diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 4d61114f1d..0ee3f2856c 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -3051,8 +3051,8 @@ function generic_ping( $post_id = 0 ) {
  * @param int|WP_Post $post    Post ID or object.
  */
 function pingback( $content, $post ) {
-	include_once ABSPATH . WPINC . '/class-IXR.php';
-	include_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
+	require_once ABSPATH . WPINC . '/class-IXR.php';
+	require_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
 
 	// Original code by Mort (http://mort.mine.nu:8080).
 	$post_links = array();
@@ -3218,8 +3218,8 @@ function trackback( $trackback_url, $title, $excerpt, $ID ) {
  * @param string $path Path to send the ping.
  */
 function weblog_ping( $server = '', $path = '' ) {
-	include_once ABSPATH . WPINC . '/class-IXR.php';
-	include_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
+	require_once ABSPATH . WPINC . '/class-IXR.php';
+	require_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
 
 	// Using a timeout of 3 seconds should be enough to cover slow servers.
 	$client             = new WP_HTTP_IXR_Client( $server, ( ( ! strlen( trim( $path ) ) || ( '/' === $path ) ) ? false : $path ) );
diff --git a/wp-includes/cron.php b/wp-includes/cron.php
index 8f716fe90e..663f819ab0 100644
--- a/wp-includes/cron.php
+++ b/wp-includes/cron.php
@@ -883,7 +883,7 @@ function spawn_cron( $gmt_time = 0 ) {
 		wp_ob_end_flush_all();
 		flush();
 
-		include_once ABSPATH . 'wp-cron.php';
+		require_once ABSPATH . 'wp-cron.php';
 		return true;
 	}
 
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 1cd71b3f75..2af752677d 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -882,7 +882,7 @@ function do_enclose( $content, $post ) {
 	global $wpdb;
 
 	// @todo Tidy this code and make the debug code optional.
-	include_once ABSPATH . WPINC . '/class-IXR.php';
+	require_once ABSPATH . WPINC . '/class-IXR.php';
 
 	$post = get_post( $post );
 	if ( ! $post ) {
diff --git a/wp-includes/update.php b/wp-includes/update.php
index 5136912037..c640e816fe 100644
--- a/wp-includes/update.php
+++ b/wp-includes/update.php
@@ -843,7 +843,7 @@ function wp_update_themes( $extra_stats = array() ) {
  * @since 3.7.0
  */
 function wp_maybe_auto_update() {
-	include_once ABSPATH . 'wp-admin/includes/admin.php';
+	require_once ABSPATH . 'wp-admin/includes/admin.php';
 	require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
 
 	$upgrader = new WP_Automatic_Updater();
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5167c4eed1..bd69b0e074 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-55637';
+$wp_version = '6.3-alpha-55641';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.