diff --git a/path/classes.py b/path/classes.py
index 2914996..7aeb7f2 100644
--- a/path/classes.py
+++ b/path/classes.py
@@ -1,5 +1,7 @@
+from __future__ import annotations
+
 import functools
-from typing import Any, Callable
+from typing import Any, Callable, Generic, TypeVar
 
 
 class ClassProperty(property):
@@ -8,18 +10,21 @@ def __get__(self, cls: Any, owner: type | None = None) -> Any:
         return self.fget.__get__(None, owner)()
 
 
-class multimethod:
+_T = TypeVar("_T")
+
+
+class multimethod(Generic[_T]):
     """
     Acts like a classmethod when invoked from the class and like an
     instancemethod when invoked from the instance.
     """
 
-    func: Callable[..., Any]
+    func: Callable[..., _T]
 
-    def __init__(self, func: Callable[..., Any]):
+    def __init__(self, func: Callable[..., _T]):
         self.func = func
 
-    def __get__(self, instance: Any | None, owner: type | None) -> Any:
+    def __get__(self, instance: _T | None, owner: type[_T] | None) -> Callable[..., _T]:
         """
         If called on an instance, pass the instance as the first
         argument.