diff --git a/lib/abf_worker/build_lists_publish_task_manager.rb b/lib/abf_worker/build_lists_publish_task_manager.rb
index 2c225ab16..c841bbede 100644
--- a/lib/abf_worker/build_lists_publish_task_manager.rb
+++ b/lib/abf_worker/build_lists_publish_task_manager.rb
@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 module AbfWorker
   class BuildListsPublishTaskManager
     REDIS_MAIN_KEY = 'abf-worker::build-lists-publish-task-manager::'