diff --git a/beams/behavior_tree/ActionNode.py b/beams/behavior_tree/ActionNode.py
index 0599aa8..647d3d0 100644
--- a/beams/behavior_tree/ActionNode.py
+++ b/beams/behavior_tree/ActionNode.py
@@ -5,7 +5,8 @@
 
 import py_trees
 
-from beams.behavior_tree.ActionWorker import ActionWorker, wrapped_action_work  # the latter is grabbed as a pas through
+from beams.behavior_tree.ActionWorker import wrapped_action_work  # noqa: F401
+from beams.behavior_tree.ActionWorker import ActionWorker
 from beams.behavior_tree.VolatileStatus import VolatileStatus
 from beams.typing_helper import ActionNodeWorkLoop, Evaluatable
 
diff --git a/beams/behavior_tree/ActionWorker.py b/beams/behavior_tree/ActionWorker.py
index e68b940..c560678 100644
--- a/beams/behavior_tree/ActionWorker.py
+++ b/beams/behavior_tree/ActionWorker.py
@@ -13,19 +13,18 @@
 """
 import logging
 import time
-from multiprocessing import Event, Value, Queue
+from multiprocessing import Event, Queue, Value
 from typing import Callable, Optional
 
-from epics.multiproc import CAProcess
-
 import py_trees
+from epics.multiproc import CAProcess
 
 from beams.behavior_tree.VolatileStatus import VolatileStatus
 from beams.logging import LOGGER_QUEUE, worker_logging_configurer
+from beams.sequencer.helpers.Timer import Timer
+from beams.sequencer.helpers.Worker import Worker
 from beams.typing_helper import (ActionNodeWorkFunction, ActionNodeWorkLoop,
                                  Evaluatable)
-from beams.sequencer.helpers.Worker import Worker
-from beams.sequencer.helpers.Timer import Timer
 
 logger = logging.getLogger(__name__)
 
diff --git a/beams/sequencer/helpers/Timer.py b/beams/sequencer/helpers/Timer.py
index 0bee866..8e5c77c 100644
--- a/beams/sequencer/helpers/Timer.py
+++ b/beams/sequencer/helpers/Timer.py
@@ -3,9 +3,9 @@
 
 class Timer():
     def __init__(self,
-                 name: str, 
+                 name: str,
                  timer_period_seconds: float,
-                 auto_start: bool = False, 
+                 auto_start: bool = False,
                  is_periodic: bool = False):
         self.name = name
         self.timer_period_seconds = timer_period_seconds
diff --git a/beams/tests/test_timer.py b/beams/tests/test_timer.py
index ac12f21..9542b04 100644
--- a/beams/tests/test_timer.py
+++ b/beams/tests/test_timer.py
@@ -1,5 +1,7 @@
 import time
+
 import pytest
+
 from beams.sequencer.helpers.Timer import Timer