diff --git a/mantidimaging/gui/windows/live_viewer/model.py b/mantidimaging/gui/windows/live_viewer/model.py
index ed5c9a144b3..d26b5dff2fa 100644
--- a/mantidimaging/gui/windows/live_viewer/model.py
+++ b/mantidimaging/gui/windows/live_viewer/model.py
@@ -22,13 +22,13 @@ class Image_Data:
 
     Attributes
     ----------
-    image_path : str
+    image_path : Path
         path to image file
     image_name : str
         name of image file
     image_size : int
         size of image file
-    image_modified_time : int
+    image_modified_time : float
         last modified time of image file
     """
 
@@ -70,7 +70,7 @@ class LiveViewerWindowModel:
     ----------
     presenter : LiveViewerWindowPresenter
         presenter for the spectrum viewer window
-    path : str
+    path : Path
         path to dataset
     """
 
@@ -85,15 +85,15 @@ def __init__(self, presenter: 'LiveViewerWindowPresenter'):
         """
 
         self.presenter = presenter
-        self._dataset_path: str | None = None
+        self._dataset_path: Path | None = None
         self.image_watcher: ImageWatcher | None = None
 
     @property
-    def path(self) -> str | None:
+    def path(self) -> Path | None:
         return self._dataset_path
 
     @path.setter
-    def path(self, path: str) -> None:
+    def path(self, path: Path) -> None:
         self._dataset_path = path
         self.image_watcher = ImageWatcher(path)
         self.image_watcher.image_changed.connect(self._handle_image_changed_in_list)
@@ -123,7 +123,7 @@ class ImageWatcher(QObject):
 
     Attributes
     ----------
-    directory : str
+    directory : Path
         path to directory to watch
     watcher : QFileSystemWatcher
         file system watcher to watch directory
@@ -145,13 +145,13 @@ class ImageWatcher(QObject):
     """
     image_changed = pyqtSignal(list)  # Signal emitted when an image is added or removed
 
-    def __init__(self, directory: str):
+    def __init__(self, directory: Path):
         """
         Constructor for ImageWatcher class which inherits from QObject.
 
         Parameters
         ----------
-        directory : str
+        directory : Path
             path to directory to watch
         """
 
diff --git a/mantidimaging/gui/windows/live_viewer/presenter.py b/mantidimaging/gui/windows/live_viewer/presenter.py
index af3b31c9ecd..8cda33cef65 100644
--- a/mantidimaging/gui/windows/live_viewer/presenter.py
+++ b/mantidimaging/gui/windows/live_viewer/presenter.py
@@ -1,6 +1,8 @@
 # Copyright (C) 2023 ISIS Rutherford Appleton Laboratory UKRI
 # SPDX - License - Identifier: GPL-3.0-or-later
 from __future__ import annotations
+
+from pathlib import Path
 from typing import TYPE_CHECKING
 from logging import getLogger
 
@@ -34,7 +36,7 @@ def __init__(self, view: LiveViewerWindowView, main_window: MainWindowView):
         self.main_window = main_window
         self.model = LiveViewerWindowModel(self)
 
-    def set_dataset_path(self, path: str) -> None:
+    def set_dataset_path(self, path: Path) -> None:
         """Set the path to the dataset."""
         self.model.path = path
 
diff --git a/mantidimaging/gui/windows/live_viewer/view.py b/mantidimaging/gui/windows/live_viewer/view.py
index c0ebf5f42ef..a21541750c7 100644
--- a/mantidimaging/gui/windows/live_viewer/view.py
+++ b/mantidimaging/gui/windows/live_viewer/view.py
@@ -45,7 +45,7 @@ def show_most_recent_image(self, image: np.ndarray) -> None:
 
     def watch_directory(self) -> None:
         """Show the most recent image arrived in the selected directory"""
-        self.presenter.set_dataset_path(str(self.path))
+        self.presenter.set_dataset_path(self.path)
 
     def remove_image(self) -> None:
         """Remove the image from the view."""