diff --git a/antora-playbook.yml b/antora-playbook.yml
index c4cef4bacf..eedbfefec5 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -40,5 +40,5 @@ ui:
     snapshot: true
 runtime:
   log:
-    failure_level: warn
+    failure_level: error
     format: pretty