diff --git a/antora-playbook.yml b/antora-playbook.yml
index c22a2a73..7b63db4e 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -37,5 +37,5 @@ runtime:
     failure_level: warn
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.3.3/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.3.5/ui-bundle.zip
     snapshot: true
diff --git a/lib/antora/templates/per-branch-antora-playbook.yml b/lib/antora/templates/per-branch-antora-playbook.yml
index 3e59db3e..175b4ee9 100644
--- a/lib/antora/templates/per-branch-antora-playbook.yml
+++ b/lib/antora/templates/per-branch-antora-playbook.yml
@@ -35,5 +35,5 @@ runtime:
     failure_level: warn
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.3.3/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.3.5/ui-bundle.zip
     snapshot: true