--- a/wp/wp-admin/js/postbox.js	Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-admin/js/postbox.js	Fri Sep 05 18:52:52 2025 +0200
@@ -461,13 +461,19 @@
 			closed = $( '.postbox' ).filter( '.closed' ).map( function() { return this.id; } ).get().join( ',' );
 			hidden = $( '.postbox' ).filter( ':hidden' ).map( function() { return this.id; } ).get().join( ',' );
 
-			$.post(ajaxurl, {
-				action: 'closed-postboxes',
-				closed: closed,
-				hidden: hidden,
-				closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
-				page: page
-			});
+			$.post(
+				ajaxurl,
+				{
+					action: 'closed-postboxes',
+					closed: closed,
+					hidden: hidden,
+					closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
+					page: page
+				},
+				function() {
+					wp.a11y.speak( __( 'Screen Options updated.' ) );
+				}
+			);
 		},
 
 		/**