diff --git a/parsl/dataflow/dflow.py b/parsl/dataflow/dflow.py
index 2cb2f4d660..164878a66f 100644
--- a/parsl/dataflow/dflow.py
+++ b/parsl/dataflow/dflow.py
@@ -162,8 +162,8 @@ def __init__(self, config: Config) -> None:
         }
 
         if self.monitoring:
-            self.monitoring.send(MessageType.WORKFLOW_INFO,
-                                 workflow_info)
+            self.monitoring.send((MessageType.WORKFLOW_INFO,
+                                 workflow_info))
 
         if config.checkpoint_files is not None:
             checkpoints = self.load_checkpoints(config.checkpoint_files)
@@ -238,7 +238,7 @@ def __exit__(self, exc_type, exc_value, traceback) -> None:
     def _send_task_log_info(self, task_record: TaskRecord) -> None:
         if self.monitoring:
             task_log_info = self._create_task_log_info(task_record)
-            self.monitoring.send(MessageType.TASK_INFO, task_log_info)
+            self.monitoring.send((MessageType.TASK_INFO, task_log_info))
 
     def _create_task_log_info(self, task_record: TaskRecord) -> Dict[str, Any]:
         """
@@ -1295,12 +1295,12 @@ def cleanup(self) -> None:
 
         if self.monitoring:
             logger.info("Sending final monitoring message")
-            self.monitoring.send(MessageType.WORKFLOW_INFO,
+            self.monitoring.send((MessageType.WORKFLOW_INFO,
                                  {'tasks_failed_count': self.task_state_counts[States.failed],
                                   'tasks_completed_count': self.task_state_counts[States.exec_done],
                                   "time_began": self.time_began,
                                   'time_completed': self.time_completed,
-                                  'run_id': self.run_id, 'rundir': self.run_dir})
+                                  'run_id': self.run_id, 'rundir': self.run_dir}))
 
             logger.info("Terminating monitoring")
             self.monitoring.close()
diff --git a/parsl/monitoring/monitoring.py b/parsl/monitoring/monitoring.py
index f5079112ca..794dbb841f 100644
--- a/parsl/monitoring/monitoring.py
+++ b/parsl/monitoring/monitoring.py
@@ -7,13 +7,12 @@
 import time
 from multiprocessing import Event, Process
 from multiprocessing.queues import Queue
-from typing import TYPE_CHECKING, Any, Literal, Optional, Tuple, Union, cast
+from typing import TYPE_CHECKING, Literal, Optional, Tuple, Union, cast
 
 import typeguard
 
 from parsl.log_utils import set_file_logger
 from parsl.monitoring.errors import MonitoringHubStartError
-from parsl.monitoring.message_type import MessageType
 from parsl.monitoring.radios import MultiprocessingQueueRadioSender
 from parsl.monitoring.router import router_starter
 from parsl.monitoring.types import TaggedMonitoringMessage
@@ -202,10 +201,9 @@ def start(self, dfk_run_dir: str, config_run_dir: Union[str, os.PathLike]) -> No
 
         self.hub_zmq_port = zmq_port
 
-    # TODO: tighten the Any message format
-    def send(self, mtype: MessageType, message: Any) -> None:
-        logger.debug("Sending message type {}".format(mtype))
-        self.radio.send((mtype, message))
+    def send(self, message: TaggedMonitoringMessage) -> None:
+        logger.debug("Sending message type {}".format(message[0]))
+        self.radio.send(message)
 
     def close(self) -> None:
         logger.info("Terminating Monitoring Hub")