From b0f50581bcade5b8c21c92fa90d18477200cc61d Mon Sep 17 00:00:00 2001
From: Phillip Webb <phil.webb@broadcom.com>
Date: Wed, 19 Nov 2025 09:37:42 -0800
Subject: [PATCH] Upgrade to antora-ui-spring v0.4.21

Closes gh-48188
---
 antora/package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/antora/package.json b/antora/package.json
index 9f8d0a98c97..ccea3540ba2 100644
--- a/antora/package.json
+++ b/antora/package.json
@@ -13,6 +13,6 @@
     "@springio/asciidoctor-extensions": "1.0.0-alpha.17"
   },
   "config": {
-    "ui-bundle-url": "https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.20/ui-bundle.zip"
+    "ui-bundle-url": "https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.21/ui-bundle.zip"
   }
 }