diff --git a/docs/changelog/2497.bugfix.rst b/docs/changelog/2497.bugfix.rst
new file mode 100644
index 000000000..3be932089
--- /dev/null
+++ b/docs/changelog/2497.bugfix.rst
@@ -0,0 +1 @@
+Dropped ``--build-option`` in isolated builds, an alternative fix for the ``SetuptoolsDeprecationWarning`` about using ``--global-option`` -- by :user:`adamchainz`
diff --git a/src/tox/helper/build_isolated.py b/src/tox/helper/build_isolated.py
index fda88fda1..d70cf1c7d 100644
--- a/src/tox/helper/build_isolated.py
+++ b/src/tox/helper/build_isolated.py
@@ -38,5 +38,5 @@ def _ensure_module_in_paths(module, paths):
 if backend_obj:
     backend = getattr(backend, backend_obj)
 
-basename = backend.build_sdist(dist_folder, {"--build-option": ["--formats=gztar"]})
+basename = backend.build_sdist(dist_folder, {})
 print(basename)