diff --git a/db/docs/batched_background_migrations/backfill_amazon_instance_audit_event_destinations_fixed.yml b/db/docs/batched_background_migrations/backfill_amazon_instance_audit_event_destinations_fixed.yml
index c59cabf0a648a22ee3637b81e7fa21f5b410d2ad..b06d67641aa67bc304d95194cec52af0ed465715 100644
--- a/db/docs/batched_background_migrations/backfill_amazon_instance_audit_event_destinations_fixed.yml
+++ b/db/docs/batched_background_migrations/backfill_amazon_instance_audit_event_destinations_fixed.yml
@@ -5,4 +5,4 @@ feature_category: audit_events
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/186866
 milestone: '18.0'
 queued_migration_version: 20250403155743
-finalized_by: # version of the migration that finalized this BBM
+finalized_by: '20250902232045'
diff --git a/db/post_migrate/20250902232045_finalize_hk_backfill_amazon_instance_audit_event_destinations_fixed.rb b/db/post_migrate/20250902232045_finalize_hk_backfill_amazon_instance_audit_event_destinations_fixed.rb
new file mode 100644
index 0000000000000000000000000000000000000000..17bb07ebc3381dde0112f6307eb645ff2aed1e1e
--- /dev/null
+++ b/db/post_migrate/20250902232045_finalize_hk_backfill_amazon_instance_audit_event_destinations_fixed.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class FinalizeHkBackfillAmazonInstanceAuditEventDestinationsFixed < Gitlab::Database::Migration[2.3]
+  milestone '18.4'
+
+  disable_ddl_transaction!
+
+  restrict_gitlab_migration gitlab_schema: :gitlab_main
+
+  def up
+    ensure_batched_background_migration_is_finished(
+      job_class_name: 'BackfillAmazonInstanceAuditEventDestinationsFixed',
+      table_name: :audit_events_instance_amazon_s3_configurations,
+      column_name: :id,
+      job_arguments: [],
+      finalize: true
+    )
+  end
+
+  def down; end
+end
diff --git a/db/schema_migrations/20250902232045 b/db/schema_migrations/20250902232045
new file mode 100644
index 0000000000000000000000000000000000000000..7d8be5398e4db7f19e30260e629401b796d67079
--- /dev/null
+++ b/db/schema_migrations/20250902232045
@@ -0,0 +1 @@
+232715c4b4ded54ad71518744c987992f839b3c2658e27b39b5e54e5600c2252
\ No newline at end of file