diff --git a/logzio/handler.py b/logzio/handler.py
index 0b319f3..a4c741f 100644
--- a/logzio/handler.py
+++ b/logzio/handler.py
@@ -32,6 +32,9 @@ class LogzioHandler(logging.Handler):
             backup_logs=backup_logs)
         logging.Handler.__init__(self)
 
+    def __del__(self):
+        del self.logzio_sender
+
     def extra_fields(self, message):
 
         not_allowed_keys = (
diff --git a/logzio/sender.py b/logzio/sender.py
index 9c770a5..922d266 100644
--- a/logzio/sender.py
+++ b/logzio/sender.py
@@ -48,6 +48,11 @@ class LogzioSender:
         self.queue = queue.Queue()
         self._initialize_sending_thread()
 
+    def __del__(self):
+        del self.logger
+        del self.backup_logs
+        del self.queue
+
     def _initialize_sending_thread(self):
         self.sending_thread = Thread(target=self._drain_queue)
         self.sending_thread.daemon = False
@@ -153,6 +158,8 @@ class LogzioSender:
                     'backing up to local file system', number_of_retries)
                 backup_logs(logs_list, self.logger)
 
+            del logs_list
+
     def _get_messages_up_to_max_allowed_size(self):
         logs_list = []
         current_size = 0