diff --git a/stgpytools/types/file.py b/stgpytools/types/file.py
index 2d86758..a1b4f14 100644
--- a/stgpytools/types/file.py
+++ b/stgpytools/types/file.py
@@ -4,8 +4,6 @@
 from pathlib import Path
 from typing import TYPE_CHECKING, Any, Callable, Iterable, Literal, TypeAlias, Union
 
-from ..functions import to_arr
-
 __all__ = [
     'FilePathType', 'FileDescriptor',
     'FileOpener',
@@ -118,6 +116,8 @@ def write_lines(
     def append_to_stem(self, suffixes: str | Iterable[str], sep: str = '_') -> SPath:
         """Append a suffix to the stem of the path"""
 
+        from ..functions import to_arr
+
         return self.with_stem(sep.join([self.stem, *to_arr(suffixes)]))  # type:ignore[list-item]