diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000000..d969f962b0
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+  "python.testing.pytestArgs": ["tests"],
+  "python.testing.unittestEnabled": false,
+  "python.testing.pytestEnabled": true
+}
diff --git a/src/tox/pytest.py b/src/tox/pytest.py
index 21cd816adf..ae21125255 100644
--- a/src/tox/pytest.py
+++ b/src/tox/pytest.py
@@ -161,7 +161,7 @@ def _setup_files(dest: Path, base: Path | None, content: dict[str, Any]) -> None
                 at_path.mkdir(exist_ok=True)
                 ToxProject._setup_files(at_path, None, value)
             elif isinstance(value, str):
-                at_path.write_text(textwrap.dedent(value))
+                at_path.write_text(textwrap.dedent(value), encoding="utf-8")
             elif value is None:
                 at_path.mkdir()
             else: