diff --git a/antora-playbook.yml b/antora-playbook.yml
index 91b4c2e56b..0a6f0cfcad 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -31,7 +31,7 @@ urls:
   redirect_facility: httpd
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.19/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.20/ui-bundle.zip
     snapshot: true
 runtime:
   log: