diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php
index 35a27fcfd6..a341ee1f29 100644
--- a/wp-includes/pluggable.php
+++ b/wp-includes/pluggable.php
@@ -2845,6 +2845,7 @@ if ( ! function_exists( 'get_avatar' ) ) :
 			'loading'       => null,
 			'fetchpriority' => null,
 			'extra_attr'    => '',
+			'decoding'      => null,
 		);
 
 		if ( empty( $args ) ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a012de805a..dad462e17d 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-beta1-56755';
+$wp_version = '6.4-beta1-56756';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.