diff --git a/src/openflexure_microscope_server/logging.py b/src/openflexure_microscope_server/logging.py
index 6ebde7db..4710e1d4 100644
--- a/src/openflexure_microscope_server/logging.py
+++ b/src/openflexure_microscope_server/logging.py
@@ -103,7 +103,7 @@ def retrieve_log_from_file() -> PlainTextResponse:
 class OFMLogFileFormatter(logging.Formatter):
     """The formatter used for the OpenFlexure Microscope Server log file."""
 
-    def format(self, record):
+    def format(self, record: logging.LogRecord):
         """Adjust the logging formatting for uvicorn logs.
 
         Any ``uvicorn.error`` logs that are at a lower
@@ -134,7 +134,7 @@ class OFMHandler(logging.Handler):
         self._log = []
         self._max_logs = max_logs
 
-    def append_record(self, record):
+    def append_record(self, record: logging.LogRecord):
         """Format message and append it to a list of records.
 
         The built in formatter is used to format the record.
@@ -145,7 +145,7 @@ class OFMHandler(logging.Handler):
         while len(self._log) > self._max_logs:
             self._log.pop(0)
 
-    def emit(self, record):
+    def emit(self, record: logging.LogRecord):
         """Emit will save the logged record to the log."""
         try:
             if record.levelno >= self.level:
@@ -166,7 +166,7 @@ class OFMHandler(logging.Handler):
 class UvicornAccessFilter(logging.Filter):
     """A logging filter to filter out "uvicorn.access" messages."""
 
-    def filter(self, record):
+    def filter(self, record: logging.LogRecord):
         """Return False if record is from "uvicorn.access"."""
         return not record.name.startswith("uvicorn.access")