diff --git a/openflexure_microscope/api/default_extensions/__init__.py b/openflexure_microscope/api/default_extensions/__init__.py
index 6cbef3be..46a0805f 100644
--- a/openflexure_microscope/api/default_extensions/__init__.py
+++ b/openflexure_microscope/api/default_extensions/__init__.py
@@ -1,9 +1,10 @@
 import logging
 import traceback
 from contextlib import contextmanager
-from labthings.extensions import BaseExtension
 from typing import List, Type
 
+from labthings.extensions import BaseExtension
+
 LABTHINGS_EXTENSIONS: List[Type[BaseExtension]] = []
 
 
diff --git a/openflexure_microscope/microscope.py b/openflexure_microscope/microscope.py
index b3c29997..f4404af9 100644
--- a/openflexure_microscope/microscope.py
+++ b/openflexure_microscope/microscope.py
@@ -22,7 +22,7 @@ try:
 except Exception as e:  # pylint: disable=W0703
     logging.error(e)
     logging.warning("Unable to import PiCameraStreamer")
-from labthings import CompositeLock, StrictLock
+from labthings import CompositeLock
 
 from openflexure_microscope.config import user_configuration, user_settings