diff --git a/wp-includes/media.php b/wp-includes/media.php
index 5c93aee225..8a4277a2f5 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -1973,6 +1973,7 @@ function wp_filter_content_tags( $content, $context = null ) {
  * @return string Converted `img` tag with optimization attributes added.
  */
 function wp_img_tag_add_loading_optimization_attrs( $image, $context ) {
+	$src               = preg_match( '/ src=["\']?([^"\']*)/i', $image, $matche_src ) ? $matche_src[1] : null;
 	$width             = preg_match( '/ width=["\']([0-9]+)["\']/', $image, $match_width ) ? (int) $match_width[1] : null;
 	$height            = preg_match( '/ height=["\']([0-9]+)["\']/', $image, $match_height ) ? (int) $match_height[1] : null;
 	$loading_val       = preg_match( '/ loading=["\']([A-Za-z]+)["\']/', $image, $match_loading ) ? $match_loading[1] : null;
@@ -1987,6 +1988,7 @@ function wp_img_tag_add_loading_optimization_attrs( $image, $context ) {
 	$optimization_attrs = wp_get_loading_optimization_attributes(
 		'img',
 		array(
+			'src'           => $src,
 			'width'         => $width,
 			'height'        => $height,
 			'loading'       => $loading_val,
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 50dbedda25..8c5c0b7e4f 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-58972';
+$wp_version = '6.7-alpha-58974';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.