diff --git a/antora-playbook.yml b/antora-playbook.yml
index 6460e0a9..8b062a76 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -33,7 +33,7 @@ urls:
   redirect_facility: httpd
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/latest/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.3.0/ui-bundle.zip
     snapshot: true
 runtime:
   log:
diff --git a/lib/antora/templates/per-branch-antora-playbook.yml b/lib/antora/templates/per-branch-antora-playbook.yml
index 97d39fe1..b008052a 100644
--- a/lib/antora/templates/per-branch-antora-playbook.yml
+++ b/lib/antora/templates/per-branch-antora-playbook.yml
@@ -34,5 +34,5 @@ runtime:
     failure_level: warn
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/latest/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.3.0/ui-bundle.zip
     snapshot: true