diff --git a/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-customize.php b/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-customize.php
index 4a0fe6f7af..d3af05ec42 100644
--- a/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-customize.php
+++ b/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-customize.php
@@ -113,7 +113,7 @@ if ( ! class_exists( 'Twenty_Twenty_One_Customize' ) ) {
 
 			// Background color.
 			// Include the custom control class.
-			include_once get_theme_file_path( 'classes/class-twenty-twenty-one-customize-color-control.php' ); // phpcs:ignore WPThemeReview.CoreFunctionality.FileInclude.FileIncludeFound
+			require_once get_theme_file_path( 'classes/class-twenty-twenty-one-customize-color-control.php' ); // phpcs:ignore WPThemeReview.CoreFunctionality.FileInclude.FileIncludeFound
 
 			// Register the custom control.
 			$wp_customize->register_control_type( 'Twenty_Twenty_One_Customize_Color_Control' );
diff --git a/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-dark-mode.php b/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-dark-mode.php
index 75b2e12599..d27b6ef630 100644
--- a/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-dark-mode.php
+++ b/wp-content/themes/twentytwentyone/classes/class-twenty-twenty-one-dark-mode.php
@@ -135,7 +135,7 @@ class Twenty_Twenty_One_Dark_Mode {
 		}
 
 		// Custom notice control.
-		include_once get_theme_file_path( 'classes/class-twenty-twenty-one-customize-notice-control.php' ); // phpcs:ignore WPThemeReview.CoreFunctionality.FileInclude.FileIncludeFound
+		require_once get_theme_file_path( 'classes/class-twenty-twenty-one-customize-notice-control.php' ); // phpcs:ignore WPThemeReview.CoreFunctionality.FileInclude.FileIncludeFound
 
 		$wp_customize->add_setting(
 			'respect_user_color_preference_notice',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index e39a033185..27d075fbfc 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-55632';
+$wp_version = '6.3-alpha-55633';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.