diff --git a/tests/fixtures/extended_with_no_setup/build.py b/tests/fixtures/extended_with_no_setup/build.py
index 3ef8cfae13a..12538fe8bb3 100644
--- a/tests/fixtures/extended_with_no_setup/build.py
+++ b/tests/fixtures/extended_with_no_setup/build.py
@@ -3,9 +3,9 @@
 import os
 import shutil
 
-from distutils.command.build_ext import build_ext
-from distutils.core import Distribution
-from distutils.core import Extension
+from setuptools import Distribution
+from setuptools import Extension
+from setuptools.command.build_ext import build_ext
 
 
 extensions = [Extension("extended.extended", ["extended/extended.c"])]
@@ -13,7 +13,7 @@
 
 def build():
     distribution = Distribution({"name": "extended", "ext_modules": extensions})
-    distribution.package_dir = "extended"
+    distribution.package_dir = {"extended": "extended"}
 
     cmd = build_ext(distribution)
     cmd.ensure_finalized()
diff --git a/tests/fixtures/extended_with_no_setup/pyproject.toml b/tests/fixtures/extended_with_no_setup/pyproject.toml
index 779fb1bd9dc..2e3b7273336 100644
--- a/tests/fixtures/extended_with_no_setup/pyproject.toml
+++ b/tests/fixtures/extended_with_no_setup/pyproject.toml
@@ -22,5 +22,5 @@ script = "build.py"
 generate-setup-file = false
 
 [build-system]
-requires = ["poetry-core>=1.5.0"]
+requires = ["poetry-core>=1.5.0", "setuptools>=67.6.1"]
 build-backend = "poetry.core.masonry.api"