diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 357561e..a8c807b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -18,6 +18,6 @@ repos:
         hooks:
             -   id: flake8
                 args: [
-                    --max-line-length=120, # refer to setup.cfg
+                    --max-line-length=120, # refer to pyproject.toml
                     --extend-ignore=E203, # why ignore E203? Refer to https://github.com/PyCQA/pycodestyle/issues/373
                 ]
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 6a54059..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,18 +0,0 @@
-# This file stores some meta configurations for project PyGrinder.
-
-# Created by Wenjie Du <wenjay.du@gmail.com>
-# License: BSD-3-Clause
-
-[flake8]
-# People may argue that coding style is personal. This may be true if the project is personal and one works like a
-# hermit, but to PyPOTS and its community, the answer is NO.
-# We use Black and Flake8 to lint code style and keep the style consistent across all commits and pull requests.
-# Black only reformats the code, and Flake8 is necessary for checking for some other issues not covered by Black.
-
-# The Black line length is default as 88, while the default of Flake8 is 79. However, considering our monitors are
-# much more advanced nowadays, I extend the maximum line length to 120, like other project e.g. transformers. People
-# who prefer the default setting can keep using 88 or 79 while coding. Please ensure your code lines not exceeding 120.
-max-line-length = 120
-extend-ignore =
-# why ignore E203? Refer to https://github.com/PyCQA/pycodestyle/issues/373
-    E203,
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 06dd259..0000000
--- a/setup.py
+++ /dev/null
@@ -1,52 +0,0 @@
-from setuptools import setup, find_packages
-
-from pygrinder import __version__
-
-with open("./README.md", encoding="utf-8") as f:
-    README = f.read()
-
-setup(
-    name="pygrinder",
-    version=__version__,
-    description="A Python toolkit for introducing missing values into datasets",
-    long_description=README,
-    long_description_content_type="text/markdown",
-    license="BSD-3-Clause",
-    author="Wenjie Du",
-    author_email="wenjay.du@gmail.com",
-    url="https://github.com/WenjieDu/PyGrinder",
-    download_url="https://github.com/WenjieDu/PyGrinder/archive/main.zip",
-    keywords=[
-        "data corruption",
-        "incomplete data",
-        "data mining",
-        "pypots",
-        "missingness",
-        "partially observed",
-        "irregular sampled",
-        "partially-observed time series",
-        "incomplete time series",
-        "missing data",
-        "missing values",
-        "pypots",
-    ],
-    packages=find_packages(exclude=["tests"]),
-    include_package_data=True,
-    install_requires=[
-        "numpy",
-        "scipy",
-        "pandas",
-        "torch",
-        "tsdb",
-    ],
-    setup_requires=["setuptools>=38.6.0"],
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Intended Audience :: Developers",
-        "Intended Audience :: Education",
-        "Intended Audience :: Science/Research",
-        "License :: OSI Approved :: BSD License",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3",
-    ],
-)