diff --git a/src/trio/_path.py b/src/trio/_path.py
index de87f13f5b..e1ced5d4c8 100644
--- a/src/trio/_path.py
+++ b/src/trio/_path.py
@@ -157,7 +157,7 @@ def generate_forwards(cls, attrs: dict[str, object]) -> None:
 
             if isinstance(attr, (property, types.ModuleType)):
                 cls._forward.append(attr_name)
-            elif isinstance(attr, types.FunctionType):
+            elif isinstance(attr, (types.FunctionType, types.BuiltinMethodType)):
                 wrapper = _forward_factory(cls, attr_name, attr)
                 setattr(cls, attr_name, wrapper)
             else: