diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 0099675..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,10 +0,0 @@
-include src/mmh3/*.c
-include src/mmh3/*.h
-include src/mmh3/*.pyi
-include src/mmh3/py.typed
-include README.md
-include LICENSE
-include CHANGELOG.md
-include pyproject.toml
-include setup.py
-include MANIFEST.in
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index 89aaa41..52ffe0b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools >= 61.0.0", "wheel"]
+requires = ["setuptools >= 74.1.0", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -64,6 +64,11 @@ Repository = "https://github.com/hajimes/mmh3"
 Changelog = "https://github.com/hajimes/mmh3/blob/master/CHANGELOG.md"
 "Bug Tracker" = "https://github.com/hajimes/mmh3/issues"
 
+[tool.setuptools]
+ext-modules = [
+  {name = "mmh3", sources=["./src/mmh3/mmh3module.c", "./src/mmh3/murmurhash3.c"]}
+]
+
 [tool.isort]
 profile = "black"
 src_paths = ["src/mmh3/__init__.pyi", "util", "tests", "benchmark", "docs"]
@@ -82,4 +87,7 @@ ignore-paths = [
 jobs = 0
 # import-error: An error tricky to resolve, especially on super-linter.
 # wrong-import-order: Respect isort's import order.
-disable = ["import-error", "wrong-import-order"]
+disable = [
+  "import-error",
+  "wrong-import-order"
+]
diff --git a/setup.py b/setup.py
deleted file mode 100644
index acc60c7..0000000
--- a/setup.py
+++ /dev/null
@@ -1,12 +0,0 @@
-"""Setup script for the mmh3 package."""
-
-from setuptools import Extension, setup
-
-mmh3module = Extension(
-    "mmh3", sources=["./src/mmh3/mmh3module.c", "./src/mmh3/murmurhash3.c"]
-)
-
-setup(
-    ext_modules=[mmh3module],
-    package_data={"mmh3": ["./src/mmh3/py.typed", "./src/mmh3/**.pyi"]},
-)