diff --git a/.travis.yml b/.travis.yml
index e8ba685..e2b0850 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,8 +4,8 @@ python:
   - 3.6
   - 3.7
 install:
-  - pip install -r requirements-test.txt
-  - pip install -e .
+  - pip install flit
+  - flit install --symlink
 script: pytest
 after_success:
   - pip install coveralls
diff --git a/README.rst b/README.rst
index 9a4a89f..4f059aa 100644
--- a/README.rst
+++ b/README.rst
@@ -43,19 +43,19 @@ https://text2array.readthedocs.io
 Contributing
 ============
 
-Pull requests are welcome! To start contributing, make sure to install all the dependencies.
+Pull requests are welcome! To start contributing, first install flit_.
 
 ::
 
-    pip install -r requirements.txt
+    pip install flit
 
-Then install this library as editable package.
+Next, install this library and its dependencies in development mode.
 
 ::
 
-    pip install -e .
+    flit install --symlink
 
-Next, setup the pre-commit hook.
+Lastly, setup the pre-commit hook.
 
 ::
 
@@ -68,3 +68,6 @@ License
 =======
 
 Apache License, Version 2.0
+
+
+.. _flit: https://pypi.org/project/flit/
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..a58b6ce
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,29 @@
+[build-system]
+requires = ["flit"]
+build-backend = "flit.buildapi"
+
+[tool.flit.metadata]
+module = "text2array"
+author = "Kemal Kurniawan"
+author-email = "kemal@kkurniawan.com"
+home-page = "https://github.com/kmkurn/text2array"
+requires = ["numpy", "tqdm"]
+requires-python = ">=3.6,<4"
+description-file = "README.rst"
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: Apache Software License",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.7",
+    "Topic :: Scientific/Engineering :: Artificial Intelligence",
+]
+
+[tool.flit.metadata.requires-extra]
+test = ["pytest ~=4.1.1", "pytest-cov"]
+doc = ["Sphinx ~=1.8.3", "sphinx_rtd_theme", "sphinx-autodoc-typehints ~=1.6.0"]
+dev = ["flake8", "flake8-mypy", "yapf"]
+
+[tool.flit.metadata.urls]
+Documentation = "https://text2array.readthedocs.io"
diff --git a/requirements-test.txt b/requirements-test.txt
deleted file mode 100644
index 6855cff..0000000
--- a/requirements-test.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-numpy==1.16.0
-pytest==4.1.1
-pytest-cov==2.6.1
-tqdm==4.31.1
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index b3e1ce5..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,4 +0,0 @@
--r requirements-test.txt
-flake8==3.6.0
-flake8-mypy==17.8.0
-yapf==0.25.0
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 4f32869..0000000
--- a/setup.py
+++ /dev/null
@@ -1,36 +0,0 @@
-from pathlib import Path
-from setuptools import setup, find_packages
-import re
-
-here = Path(__file__).resolve().parent
-readme = (here / 'README.rst').read_text()
-version = re.search(
-    r'__version__ = (["\'])([^"\']*)\1',
-    (here / 'text2array' / '__init__.py').read_text(),
-)[2]
-
-setup(
-    name='text2array',
-    version=version,
-    description='Convert your NLP text data to arrays!',
-    long_description=readme,
-    url='https://github.com/kmkurn/text2array',
-    author='Kemal Kurniawan',
-    author_email='kemal@kkurniawan.com',
-    license='Apache',
-    classifiers=[
-        'Development Status :: 3 - Alpha',
-        'Intended Audience :: Developers',
-        'Intended Audience :: Science/Research',
-        'License :: OSI Approved :: Apache Software License',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Topic :: Scientific/Engineering :: Artificial Intelligence',
-    ],
-    packages=find_packages(),
-    install_requires=[
-        'numpy',
-        'tqdm ~=4.31.1',
-    ],
-    python_requires='>=3.6, <4',
-)
diff --git a/text2array/__init__.py b/text2array/__init__.py
index 96579ea..3ab33ea 100644
--- a/text2array/__init__.py
+++ b/text2array/__init__.py
@@ -11,7 +11,9 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+"""Convert your NLP text data to arrays!"""
 
+__version__ = '0.0.10a2'
 __all__ = [
     'Sample',
     'Batch',
@@ -19,7 +21,6 @@
     'BatchIterator',
     'ShuffleIterator',
 ]
-__version__ = '0.0.9'
 
 from .batches import Batch
 from .samples import Sample