diff --git a/clearml/binding/artifacts.py b/clearml/binding/artifacts.py
index 2d04a80d..5257e3b5 100644
--- a/clearml/binding/artifacts.py
+++ b/clearml/binding/artifacts.py
@@ -1139,7 +1139,6 @@ class Artifacts(object):
             temp_folder, prefix, suffix = self._temp_files_lookup.pop(local_filename)
             fd, temp_filename = mkstemp(prefix=prefix, suffix=suffix)
             os.close(fd)
-            
             for i in range(self._max_tmp_file_replace_attemps):
                 try:
                     os.replace(local_filename, temp_filename)
@@ -1151,7 +1150,7 @@ class Artifacts(object):
                         )
                     )
             else:
-                # final attempt, and if it fails, throw an exception
+                # final attempt, and if it fails, throw an exception.
                 # exception could be thrown on some Windows systems
                 os.replace(local_filename, temp_filename)
             local_filename = temp_filename
diff --git a/clearml/router/router.py b/clearml/router/router.py
index 7f3a9117..74757fac 100644
--- a/clearml/router/router.py
+++ b/clearml/router/router.py
@@ -1,4 +1,4 @@
-from typing import Optional, Callable, Dict, Union  # noqa
+from typing import Optional, Callable, Dict, Union, List  # noqa
 from fastapi import Request, Response  # noqa
 from .proxy import HttpProxy
 
diff --git a/clearml/task.py b/clearml/task.py
index f0f7211f..fce2c50c 100644
--- a/clearml/task.py
+++ b/clearml/task.py
@@ -113,7 +113,7 @@ if TYPE_CHECKING:
     import pandas
     import numpy
     from PIL import Image
-    from .router.router import HttpRouter
+    from .router.router import HttpRouter  # noqa: F401
 
 # Forward declaration to help linters
 TaskInstance = TypeVar("TaskInstance", bound="Task")