diff --git a/.cspell.json b/.cspell.json
new file mode 100644
index 0000000..e4ded8a
--- /dev/null
+++ b/.cspell.json
@@ -0,0 +1,10 @@
+{
+  "version": "0.2",
+  "language": "en,en-gb",
+  "ignoreWords": ["getframe", "pydantic", "UNLCK"],
+  "words": ["chacl", "mdrs", "mdrsclient", "neurodata", "Neuroinformatics", "RIKEN"],
+  "ignorePaths": [
+    ".env",
+    "__pycache__"
+  ]
+}
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..5f79528
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+# editorconfig.org
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 065b2f4..12ec797 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -15,9 +15,12 @@
   "[jsonc]": {
     "editor.defaultFormatter": "esbenp.prettier-vscode"
   },
+  // Extensions - Black Formatter
+  "black-formatter.args": ["--line-length=120"],
   // Extensions - Code Spell Checker
-  "cSpell.ignoreWords": ["getframe", "pydantic", "UNLCK"],
-  "cSpell.words": ["chacl", "mdrs", "mdrsclient", "neurodata", "Neuroinformatics", "RIKEN"],
+  // - see: .cspell.json
+  // Extensions - Flake8
+  "flake8.args": ["--max-line-length=120"],
   // Extensions - isort
   "isort.args": ["--profile=black"],
   // Extensions - Prettier
@@ -28,16 +31,6 @@
   "prettier.trailingComma": "all",
   // Extensions - Pylance
   "python.analysis.typeCheckingMode": "strict",
-  "python.analysis.exclude": ["api/migrations/[0-9]*.py"],
-  // Extensions - Python:black
-  "python.formatting.blackArgs": ["--line-length=120"],
-  "python.formatting.provider": "black",
-  // Extensions - Python:Flake8
-  "python.linting.enabled": true,
-  "python.linting.flake8Enabled": true,
-  "python.linting.flake8Args": ["--max-line-length=120"],
-  "python.linting.ignorePatterns": ["**/site-packages/**/*.py", ".vscode/*.py"],
-  "python.linting.lintOnSave": true,
   // Extensions - Python Docstring Generator configuration
   "autoDocstring.docstringFormat": "google"
 }
diff --git a/README.md b/README.md
index 7d06e5a..31ba595 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ The mdrs-client-python is python library and a command-line client for up- and d
 ## Installing
 
 ```
-pip install -e .
+poetry install
 ```
 
 ## Example Usage
diff --git a/mdrsclient/VERSION b/mdrsclient/VERSION
index 524cb55..26aaba0 100644
--- a/mdrsclient/VERSION
+++ b/mdrsclient/VERSION
@@ -1 +1 @@
-1.1.1
+1.2.0
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..75b7416
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,74 @@
+[tool.poetry]
+name = "mdrs-client-python"
+version = "1.2.0"
+description = "The mdrs-client-python is python library and a command-line client for up- and downloading files to and from MDRS based repository."
+authors = ["Yoshihiro OKUMURA <yoshihiro.okumura@riken.jp>"]
+license = "MIT"
+readme = "README.md"
+classifiers=[
+    "Development Status :: 3 - Alpha",
+    "Environment :: Console",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Science/Research",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "OSI Approved :: MIT License",
+    "Topic :: Utilities",
+]
+packages = [
+    { include = "mdrsclient" }
+]
+
+[tool.poetry.dependencies]
+python = "^3.10"
+requests = "^2.31.0"
+python-dotenv = "^1.0.0"
+pydantic = "^2.4.2"
+pydantic-settings = "^2.0.3"
+PyJWT = "^2.8.0"
+validators = "^0.22.0"
+
+[tool.poetry.group.dev.dependencies]
+black = "^23.9.1"
+flake8 = "^6.1.0"
+Flake8-pyproject = "^1.2.3"
+isort = "^5.12.0"
+pyright = "^1.1.329"
+
+[tool.poetry.scripts]
+mdrs = 'mdrsclient.__main__:main'
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.black]
+line-length = 120
+target-version = ['py310']
+include = '\.pyi?$'
+exclude = '''
+/(
+    \.git
+  | \.venv
+  | __pycache__
+  | dist
+)/
+'''
+
+[tool.flake8]
+exclude = ".git, .venv, __pycache__, dist"
+max-complexity = 10
+max-line-length = 120
+
+[tool.isort]
+profile = "black"
+line_length = 120
+
+[tool.mypy]
+
+[tool.pyright]
+typeCheckingMode = "basic"
+exclude = ["**/__pycache__", "**/.*", "dist"]
+#reportUnknownMemberType = "warning"
+#reportUnknownVariableType = "warning"
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 7486add..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-requests
-python-dotenv
-pydantic
-pydantic-settings
-PyJWT
-validators
diff --git a/setup.py b/setup.py
deleted file mode 100644
index becc950..0000000
--- a/setup.py
+++ /dev/null
@@ -1,40 +0,0 @@
-import os
-from typing import Final
-
-from setuptools import find_packages, setup
-
-from mdrsclient import __version__
-
-BASE_DIR: Final[str] = os.path.realpath(os.path.dirname(__file__))
-
-with open(os.path.join(BASE_DIR, "requirements.txt")) as f:
-    __requirements__ = f.read().splitlines()
-
-with open(os.path.join(BASE_DIR, "README.md")) as f:
-    __readme__ = f.read()
-
-setup(
-    name="mdrsclient",
-    version=__version__,
-    description="A MDRS command-line tool",
-    long_description=__readme__,
-    author="Neuroinformatics Unit, RIKEN CBS",
-    license="MIT",
-    classifiers=[
-        "Development Status :: 3 - Alpha",
-        "Environment :: Console",
-        "Intended Audience :: Developers",
-        "Intended Audience :: Science/Research",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "OSI Approved :: MIT License",
-        "Topic :: Utilities",
-    ],
-    packages=find_packages(),
-    include_package_data=True,
-    package_data={
-        "mdrsclient": ["VERSION"],
-    },
-    install_requires=__requirements__,
-    entry_points={"console_scripts": ["mdrs=mdrsclient.__main__:main"]},
-)