diff --git a/wp-content/themes/twentytwentyone/inc/template-functions.php b/wp-content/themes/twentytwentyone/inc/template-functions.php
index 4924773dc1..8c8fcf33e1 100644
--- a/wp-content/themes/twentytwentyone/inc/template-functions.php
+++ b/wp-content/themes/twentytwentyone/inc/template-functions.php
@@ -445,7 +445,7 @@ function twenty_twenty_one_get_attachment_image_attributes( $attr, $attachment,
 		return $attr;
 	}
 
-	if ( isset( $attr['class'] ) && str_contains( $attr['class'], 'custom-logo' ) ) {
+	if ( isset( $attr['class'] ) && false !== strpos( $attr['class'], 'custom-logo' ) ) {
 		return $attr;
 	}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 2e0bd1d9ed..eb7452b7d0 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.5-alpha-57276';
+$wp_version = '6.5-alpha-57277';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.