diff --git a/antora-ci-playbook.yml b/antora-ci-playbook.yml
index 243d4d7..aeb2390 100644
--- a/antora-ci-playbook.yml
+++ b/antora-ci-playbook.yml
@@ -13,7 +13,4 @@ content:
 ui: 
   bundle:
     url: ui-bundle.zip
-  supplemental_files: ./supplemental-ui
-antora:
-  extensions:
-  - '@antora/lunr-extension'
\ No newline at end of file
+  supplemental_files: ./supplemental-ui
\ No newline at end of file