diff --git a/source/_layouts/default.html b/source/_layouts/default.html
index 76bc7afa..e8bee5b8 100644
--- a/source/_layouts/default.html
+++ b/source/_layouts/default.html
@@ -64,6 +64,10 @@
 </head>
 <body class="bg-white">
 
+<div role="region" aria-label="PHPverse 2025 announcement" class="w-full bg-green-500 text-white text-center py-1 text-sm font-medium z-50 hover:text-white">
+    <a href="https://jb.gg/phpverse-phpf" target="_blank" rel="noopener noreferrer" class="text-white no-underline hover:underline hover:text-white visited:hover:text-white">Join PHPverse 2025 — a free online event celebrating PHP’s 30th birthday!</a>
+</div>
+
 <header x-data="{ isOpen: false }" @keydown.escape="isOpen = false" @click.away="isOpen = false" itemscope
         itemtype="https://schema.org/WPHeader">
     <nav class="mx-auto flex max-w-7xl items-center justify-between relative">
