diff --git a/airflow/utils/log/file_task_handler.py b/airflow/utils/log/file_task_handler.py
index 111f26c279cf0..c1c32658a164a 100644
--- a/airflow/utils/log/file_task_handler.py
+++ b/airflow/utils/log/file_task_handler.py
@@ -52,7 +52,7 @@ def set_context(self, ti):
         :param ti: task instance object
         """
         local_loc = self._init_file(ti)
-        self.handler = logging.FileHandler(local_loc)
+        self.handler = logging.FileHandler(local_loc, encoding='utf-8')
         self.handler.setFormatter(self.formatter)
         self.handler.setLevel(self.level)