diff --git a/lib/searchyll/indexer.rb b/lib/searchyll/indexer.rb
index 63884c9..caf5559 100644
--- a/lib/searchyll/indexer.rb
+++ b/lib/searchyll/indexer.rb
@@ -244,7 +244,7 @@ def finalize_aliases(http)
       update_aliases.body = {
         actions: [
           { remove: {
-            index: old_indices.join(','),
+            index: "*",
             alias: configuration.elasticsearch_index_base_name
           } },
           { add: {