diff --git a/wp-admin/themes.php b/wp-admin/themes.php
index 77c509141e..ec87cbf502 100644
--- a/wp-admin/themes.php
+++ b/wp-admin/themes.php
@@ -388,7 +388,7 @@ foreach ( $themes as $theme ) :
 <div class="theme<?php echo $active_class; ?>">
 	<?php if ( ! empty( $theme['screenshot'][0] ) ) { ?>
 		<div class="theme-screenshot">
-			<img src="<?php echo esc_attr( $theme['screenshot'][0] . '?ver=' . $theme['version'] ); ?>" alt="" />
+			<img src="<?php echo esc_url( $theme['screenshot'][0] . '?ver=' . $theme['version'] ); ?>" alt="" />
 		</div>
 	<?php } else { ?>
 		<div class="theme-screenshot blank"></div>
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5cdd6b6eab..c052b673fd 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-alpha-52948';
+$wp_version = '6.0-alpha-52949';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.