diff --git a/src/build/util.py b/src/build/util.py
index d7dc43b6..78bf592f 100644
--- a/src/build/util.py
+++ b/src/build/util.py
@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import os  # noqa: F401
 import pathlib
 import tempfile