diff --git a/wp-admin/about.php b/wp-admin/about.php
index 639df3bc08..75d3635df9 100644
--- a/wp-admin/about.php
+++ b/wp-admin/about.php
@@ -160,8 +160,8 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 			</h2>
 			<div class="column about__image is-vertically-aligned-center">
 				<picture>
-					<source srcset="https://s.w.org/images/core/5.8/about-theme-json.png, https://s.w.org/images/core/5.8/about-theme-json-2x.png 2x">
-					<img src="https://s.w.org/images/core/5.8/about-theme-json.png" alt="">
+					<source srcset="https://s.w.org/images/core/5.8/about-theme-json.png, https://s.w.org/images/core/5.8/about-theme-json-2x.png 2x" />
+					<img src="https://s.w.org/images/core/5.8/about-theme-json.png" alt="" />
 				</picture>
 			</div>
 		</div>
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 92a8ba418d..1c3b36a1c6 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51472';
+$wp_version = '5.9-alpha-51473';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.