diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index d2d6686e..75a7c249 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -26,7 +26,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip setuptools
-        pip install --progress-bar off .[release]
+        pip install --progress-bar off wheel twine
     - run: python setup.py sdist bdist_wheel
     - run: twine check dist/*
 
diff --git a/setup.cfg b/setup.cfg
index 8a6c2350..81f6acdd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,3 +1,53 @@
+[metadata]
+name = optuna-dashboard
+version = attr: optuna_dashboard.version.__version__
+
+url = https://github.com/optuna/optuna-dashboard
+author = Masashi Shibata
+author_email = m.shibata1020@gmail.com
+description = Real-time dashboard for Optuna.
+long_description = file: README.md
+long_description_content_type = text/markdown
+license = MIT License
+classifiers =
+    Development Status :: 3 - Alpha
+    Intended Audience :: Developers
+    License :: OSI Approved :: MIT License
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3 :: Only
+    Intended Audience :: Science/Research
+
+[options]
+python_requires = >=3.6
+include_package_data = True
+packages = find:
+install_requires =
+    optuna>=2.4
+    bottle
+    typing-extensions; python_version<3.8
+
+[options.extras_require]
+lint =
+    black
+    mypy
+    flake8
+
+[options.entry_points]
+console_scripts =
+    optuna-dashboard = optuna_dashboard.cli:main
+
+[options.package_data]
+optuna_dashboard = public/*
+
+[options.packages.find]
+exclude =
+    tests
+
 [flake8]
 max-line-length = 99
 statistics = True
diff --git a/setup.py b/setup.py
index fd15faf2..6b40b52b 100644
--- a/setup.py
+++ b/setup.py
@@ -1,54 +1,4 @@
-import os
-import sys
-import types
-from typing import List
-from setuptools import setup, find_packages
-from importlib.machinery import SourceFileLoader
+from setuptools import setup
 
-BASE_PATH = os.path.dirname(__file__)
-
-
-def get_long_description() -> str:
-    readme_filepath = os.path.join(BASE_PATH, "README.md")
-    with open(readme_filepath) as f:
-        return f.read()
-
-
-def get_version() -> int:
-    version_filepath = os.path.join(BASE_PATH, "optuna_dashboard", "version.py")
-    module_name = "version"
-    target_module = types.ModuleType(module_name)
-    loader = SourceFileLoader(module_name, version_filepath)
-    loader.exec_module(target_module)
-    return getattr(target_module, "__version__")
-
-
-def get_install_requires() -> List[str]:
-    deps = ["optuna>=2.4", "bottle"]
-    if sys.version_info[:2] < (3, 8):
-        deps.append("typing-extensions")
-    return deps
-
-
-setup(
-    name="optuna-dashboard",
-    version=get_version(),
-    description="Real-time dashboard for Optuna.",
-    long_description=get_long_description(),
-    long_description_content_type="text/markdown",
-    author="Masashi Shibata",
-    author_email="m.shibata1020@gmail.com",
-    url="https://github.com/optuna/optuna-dashboard",
-    packages=find_packages(),
-    install_requires=get_install_requires(),
-    extras_require={
-        "lint": ["black", "flake8", "mypy"],
-        "release": ["wheel", "twine"],
-    },
-    package_data={"optuna_dashboard": ["public/*"]},
-    entry_points={
-        "console_scripts": [
-            "optuna-dashboard = optuna_dashboard.cli:main",
-        ],
-    },
-)
+if __name__ == '__main__':
+    setup()