diff --git a/linkml_runtime/loaders/loader_root.py b/linkml_runtime/loaders/loader_root.py
index 4b2b3cd2..6cce4de2 100644
--- a/linkml_runtime/loaders/loader_root.py
+++ b/linkml_runtime/loaders/loader_root.py
@@ -1,5 +1,5 @@
 from abc import ABC, abstractmethod
-from pathlib import Path, PosixPath
+from pathlib import Path
 from typing import TextIO, Union, Optional, Callable, Dict, Type, Any, List
 from logging import getLogger
 
@@ -84,7 +84,7 @@ def load_as_dict(self, *args, **kwargs) -> Union[dict, List[dict]]:
         raise NotImplementedError()
 
     @abstractmethod
-    def load_any(self, source: Union[str, dict, TextIO, PosixPath], target_class: Type[Union[BaseModel, YAMLRoot]], *, base_dir: Optional[str] = None,
+    def load_any(self, source: Union[str, dict, TextIO, Path], target_class: Type[Union[BaseModel, YAMLRoot]], *, base_dir: Optional[str] = None,
              metadata: Optional[FileInfo] = None, **_) -> Union[BaseModel, YAMLRoot, List[BaseModel], List[YAMLRoot]]:
         """
         Load source as an instance of target_class, or list of instances of target_class