diff --git a/.travis.yml b/.travis.yml
index ff56f0f..f5aa6ce 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
 language: python
-install: "make"
+os: linux
+dist: focal
 
 python:
   - "3.5"
@@ -8,8 +9,35 @@ python:
   - "3.8"
   - "pypy3"
 
-install:
-  - make install
+before_install: pip install poetry
+install: make install
+script: make test
+after_success: poetry run coveralls
 
-script:
-  - make test
+stages:
+  - lint
+  - test
+  - publish
+
+jobs:
+  fast_finish: true
+  allow_failures:
+    - python: pypy3
+
+  include:
+    - stage: lint
+      python: 3.8
+      script:
+        - make lint
+    - stage: publish
+      script: skip
+      before_deploy:
+        - poetry config http-basic.pypi $PYPI_USERNAME $PYPI_PASSWORD
+        - poetry build
+      deploy:
+        provider: script
+        script: poetry publish
+        skip_cleanup: true
+        on:
+          tags: true
+      if: tag IS present
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7cc31ef..943c882 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,14 +3,20 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
+## [1.1.0] - 2020-08-17
+A dummy version, NO CHANGES.
+
+
 ## [1.0.post2] - 2020-03-11
 ### Changed
 - Dump version.
 
+
 ## [1.0.post1] - 2020-03-11
 ### Changed
 - Fix import aftership problem [#15](https://github.com/AfterShip/aftership-sdk-python/issues/15).
 
+
 ## [1.0] - 2020-03-10
 ### Added
 - Python 3.5+ support.
@@ -21,6 +27,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Removed
 - Python 2.X support.
 
+[1.1.0]: https://github.com/AfterShip/aftership-sdk-python/releases/tag/1.1.0
 [1.0.post2]: https://github.com/AfterShip/aftership-sdk-python/releases/tag/1.0.post2
 [1.0.post1]: https://github.com/AfterShip/aftership-sdk-python/releases/tag/1.0.post1
 [1.0]: https://github.com/AfterShip/aftership-sdk-python/releases/tag/1.0
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index a501fcc..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,2 +0,0 @@
-include README.rst LICENSE requirements.txt
-recursive-include aftership
diff --git a/Makefile b/Makefile
index 9fb92c5..c109f9f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,25 +1,23 @@
 .PHONY: docs clean build
 
 install:
-	pip install --upgrade .
-	pip install -r requirements-dev.txt
+	poetry install
 
 test:
-	cd tests && py.test
+	poetry run py.test --cov=aftership
 
 record:
-	cd tests && py.test --vcr-record=new_episodes
+	poetry run py.test --vcr-record=new_episodes
 
-flake8:
-	flake8
+lint:
+	poetry run flake8 aftership
 
 docs:
 	cd docs && make html
 	@echo "\033[95m\n\nBuild successful! View the docs homepage at docs/_build/html/index.html.\n\033[0m"
 
 build:
-	python setup.py sdist --formats=gztar
-	python setup.py sdist bdist_wheel
+	poetry build
 
 clean:
 	-rm -r docs/_build
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..71af826
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,651 @@
+[[package]]
+category = "dev"
+description = "Atomic file writes."
+marker = "sys_platform == \"win32\""
+name = "atomicwrites"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.4.0"
+
+[[package]]
+category = "dev"
+description = "Classes Without Boilerplate"
+name = "attrs"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "19.3.0"
+
+[package.extras]
+azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
+dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "pre-commit"]
+docs = ["sphinx", "zope.interface"]
+tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+
+[[package]]
+category = "main"
+description = "Python package for providing Mozilla's CA Bundle."
+name = "certifi"
+optional = false
+python-versions = "*"
+version = "2020.6.20"
+
+[[package]]
+category = "main"
+description = "Universal encoding detector for Python 2 and 3"
+name = "chardet"
+optional = false
+python-versions = "*"
+version = "3.0.4"
+
+[[package]]
+category = "dev"
+description = "Cross-platform colored terminal text."
+marker = "sys_platform == \"win32\""
+name = "colorama"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "0.4.3"
+
+[[package]]
+category = "main"
+description = "Code coverage measurement for Python"
+name = "coverage"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+version = "5.2.1"
+
+[package.extras]
+toml = ["toml"]
+
+[[package]]
+category = "main"
+description = "Show coverage stats online via coveralls.io"
+name = "coveralls"
+optional = false
+python-versions = ">= 3.5"
+version = "2.1.2"
+
+[package.dependencies]
+coverage = ">=4.1,<6.0"
+docopt = ">=0.6.1"
+requests = ">=1.0.0"
+
+[package.extras]
+yaml = ["PyYAML (>=3.10)"]
+
+[[package]]
+category = "main"
+description = "Pythonic argument parser, that will make you smile"
+name = "docopt"
+optional = false
+python-versions = "*"
+version = "0.6.2"
+
+[[package]]
+category = "dev"
+description = "the modular source code checker: pep8 pyflakes and co"
+name = "flake8"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+version = "3.8.3"
+
+[package.dependencies]
+mccabe = ">=0.6.0,<0.7.0"
+pycodestyle = ">=2.6.0a1,<2.7.0"
+pyflakes = ">=2.2.0,<2.3.0"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
+[[package]]
+category = "main"
+description = "Internationalized Domain Names in Applications (IDNA)"
+name = "idna"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.10"
+
+[[package]]
+category = "dev"
+description = "Read metadata from Python packages"
+marker = "python_version < \"3.8\""
+name = "importlib-metadata"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "1.7.0"
+
+[package.dependencies]
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
+
+[[package]]
+category = "dev"
+description = "iniconfig: brain-dead simple config-ini parsing"
+name = "iniconfig"
+optional = false
+python-versions = "*"
+version = "1.0.1"
+
+[[package]]
+category = "dev"
+description = "McCabe checker, plugin for flake8"
+name = "mccabe"
+optional = false
+python-versions = "*"
+version = "0.6.1"
+
+[[package]]
+category = "dev"
+description = "More routines for operating on iterables, beyond itertools"
+name = "more-itertools"
+optional = false
+python-versions = ">=3.5"
+version = "8.4.0"
+
+[[package]]
+category = "dev"
+description = "multidict implementation"
+marker = "python_version == \"3.5\" and python_version == \"3.5\" or python_version >= \"3.6\""
+name = "multidict"
+optional = false
+python-versions = ">=3.5"
+version = "4.7.6"
+
+[[package]]
+category = "dev"
+description = "Core utilities for Python packages"
+name = "packaging"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "20.4"
+
+[package.dependencies]
+pyparsing = ">=2.0.2"
+six = "*"
+
+[[package]]
+category = "dev"
+description = "Object-oriented filesystem paths"
+marker = "python_version < \"3.6\""
+name = "pathlib2"
+optional = false
+python-versions = "*"
+version = "2.3.5"
+
+[package.dependencies]
+six = "*"
+
+[[package]]
+category = "dev"
+description = "plugin and hook calling mechanisms for python"
+name = "pluggy"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.13.1"
+
+[package.dependencies]
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12"
+
+[package.extras]
+dev = ["pre-commit", "tox"]
+
+[[package]]
+category = "dev"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+name = "py"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.9.0"
+
+[[package]]
+category = "dev"
+description = "Python style guide checker"
+name = "pycodestyle"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.6.0"
+
+[[package]]
+category = "dev"
+description = "passive checker of Python programs"
+name = "pyflakes"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.2.0"
+
+[[package]]
+category = "dev"
+description = "Python parsing module"
+name = "pyparsing"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "2.4.7"
+
+[[package]]
+category = "dev"
+description = "pytest: simple powerful testing with Python"
+name = "pytest"
+optional = false
+python-versions = ">=3.5"
+version = "6.0.1"
+
+[package.dependencies]
+atomicwrites = ">=1.0"
+attrs = ">=17.4.0"
+colorama = "*"
+iniconfig = "*"
+more-itertools = ">=4.0.0"
+packaging = "*"
+pluggy = ">=0.12,<1.0"
+py = ">=1.8.2"
+toml = "*"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12"
+
+[package.dependencies.pathlib2]
+python = "<3.6"
+version = ">=2.2.0"
+
+[package.extras]
+checkqa_mypy = ["mypy (0.780)"]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
+
+[[package]]
+category = "dev"
+description = "Pytest plugin for measuring coverage."
+name = "pytest-cov"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "2.10.1"
+
+[package.dependencies]
+coverage = ">=4.4"
+pytest = ">=4.6"
+
+[package.extras]
+testing = ["fields", "hunter", "process-tests (2.0.2)", "six", "pytest-xdist", "virtualenv"]
+
+[[package]]
+category = "dev"
+description = "Plugin for managing VCR.py cassettes"
+name = "pytest-vcr"
+optional = false
+python-versions = "*"
+version = "1.0.2"
+
+[package.dependencies]
+pytest = ">=3.6.0"
+vcrpy = "*"
+
+[[package]]
+category = "dev"
+description = "YAML parser and emitter for Python"
+name = "pyyaml"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "5.3.1"
+
+[[package]]
+category = "main"
+description = "Python HTTP for Humans."
+name = "requests"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "2.24.0"
+
+[package.dependencies]
+certifi = ">=2017.4.17"
+chardet = ">=3.0.2,<4"
+idna = ">=2.5,<3"
+urllib3 = ">=1.21.1,<1.25.0 || >1.25.0,<1.25.1 || >1.25.1,<1.26"
+
+[package.extras]
+security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)"]
+socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7)", "win-inet-pton"]
+
+[[package]]
+category = "dev"
+description = "Python 2 and 3 compatibility utilities"
+name = "six"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "1.15.0"
+
+[[package]]
+category = "dev"
+description = "Python Library for Tom's Obvious, Minimal Language"
+name = "toml"
+optional = false
+python-versions = "*"
+version = "0.10.1"
+
+[[package]]
+category = "dev"
+description = "Backported and Experimental Type Hints for Python 3.5+"
+marker = "python_version >= \"3.6\" and python_version < \"3.8\""
+name = "typing-extensions"
+optional = false
+python-versions = "*"
+version = "3.7.4.2"
+
+[[package]]
+category = "main"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+name = "urllib3"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+version = "1.25.10"
+
+[package.extras]
+brotli = ["brotlipy (>=0.6.0)"]
+secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "pyOpenSSL (>=0.14)", "ipaddress"]
+socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7,<2.0)"]
+
+[[package]]
+category = "dev"
+description = "Automatically mock your HTTP interactions to simplify and speed up testing"
+name = "vcrpy"
+optional = false
+python-versions = ">=3.5"
+version = "4.1.0"
+
+[package.dependencies]
+PyYAML = "*"
+six = ">=1.5"
+wrapt = "*"
+
+[[package.dependencies.yarl]]
+python = ">=3.5,<3.6"
+version = "<1.4"
+
+[[package.dependencies.yarl]]
+python = ">=3.6"
+version = "*"
+
+[[package]]
+category = "dev"
+description = "Module for decorators, wrappers and monkey patching."
+name = "wrapt"
+optional = false
+python-versions = "*"
+version = "1.12.1"
+
+[[package]]
+category = "dev"
+description = "Yet another URL library"
+marker = "python_version == \"3.5\""
+name = "yarl"
+optional = false
+python-versions = "*"
+version = "1.2.0"
+
+[package.dependencies]
+idna = ">=2.0"
+multidict = ">=4.0"
+
+[[package]]
+category = "dev"
+description = "Yet another URL library"
+marker = "python_version >= \"3.6\""
+name = "yarl"
+optional = false
+python-versions = ">=3.5"
+version = "1.5.1"
+
+[package.dependencies]
+idna = ">=2.0"
+multidict = ">=4.0"
+
+[package.dependencies.typing-extensions]
+python = "<3.8"
+version = ">=3.7.4"
+
+[[package]]
+category = "dev"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+marker = "python_version < \"3.8\""
+name = "zipp"
+optional = false
+python-versions = ">=2.7"
+version = "1.2.0"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["pathlib2", "unittest2", "jaraco.itertools", "func-timeout"]
+
+[metadata]
+content-hash = "6a59a3013b6d0f182371f5c28b1179643ca9c9451669df681adfe5d9128a62a0"
+python-versions = "^3.5"
+
+[metadata.files]
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+]
+zipp = [
+    {file = "zipp-1.2.0-py2.py3-none-any.whl", hash = "sha256:e0d9e63797e483a30d27e09fffd308c59a700d365ec34e93cc100844168bf921"},
+    {file = "zipp-1.2.0.tar.gz", hash = "sha256:c70410551488251b0fee67b460fb9a536af8d6f9f008ad10ac51f615b6a521b1"},
+]
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..b6b5f00
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,28 @@
+[tool.poetry]
+name = "aftership"
+version = "1.1.0"
+description = "The python SDK of AfterShip API"
+authors = ["AfterShip <support@aftership.com>"]
+license = "MIT"
+
+packages = [
+    { include = "aftership" },
+    { include = "*.md" },
+    { include = "*.rst" },
+    { include = "LICENSE" },
+]
+
+[tool.poetry.dependencies]
+python = "^3.5"
+requests = "^2.0.0'"
+coveralls = "^2.1.2"
+
+[tool.poetry.dev-dependencies]
+pytest = "^6.0.1"
+pytest-cov = "^2.10.1"
+pytest-vcr = "^1.0.2"
+flake8 = "^3.8.3"
+
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"
diff --git a/requirements-dev.txt b/requirements-dev.txt
deleted file mode 100644
index d9d554c..0000000
--- a/requirements-dev.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-# For packaging
-wheel
-setuptools
-
-# For testing
-flake8
-pytest
-pytest-cov
-pytest-vcr
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index f229360..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-requests
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 136ab70..0000000
--- a/setup.py
+++ /dev/null
@@ -1,94 +0,0 @@
-import codecs
-import os
-import re
-from codecs import open  # To use a consistent encoding
-
-from setuptools import setup
-
-here = os.path.abspath(os.path.dirname(__file__))
-
-
-def read(*parts):
-    with codecs.open(os.path.join(here, *parts), 'r') as fp:
-        return fp.read()
-
-
-def find_version(*file_paths):
-    version_file = read(*file_paths)
-    print(version_file)
-    version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
-                              version_file, re.M)
-    if version_match:
-        return version_match.group(1)
-    raise RuntimeError("Unable to find version string.")
-
-
-# Get the long description from the relevant file
-with open(os.path.join(here, 'README.rst'), encoding='utf-8') as f:
-    long_description = f.read()
-
-with open(os.path.join(here, 'requirements.txt'), encoding='utf-8') as f:
-    install_requires = f.read().split('\n')
-
-__version__ = find_version("aftership", "__init__.py")
-
-setup(
-    name='aftership',
-
-    python_requires='>=3.5.0',
-
-    # Versions should comply with PEP440.  For a discussion on single-sourcing
-    # the version across setup.py and the project code, see
-    # http://packaging.python.org/en/latest/tutorial.html#version
-    version=__version__,
-
-    description='Python SDK of AfterShip API',
-    long_description=long_description,
-
-    # The project's main homepage.
-    url='https://github.com/AfterShip/aftership-python',
-
-    # Download path
-    download_url='https://github.com/AfterShip/aftership-python/tarball/{}'.format(__version__),
-
-    # Author details
-    author='AfterShip',
-    author_email='support@aftership.com',
-
-    # Choose your license
-    license='MIT',
-
-    # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
-    classifiers=[
-        # How mature is this project? Common values are
-        #   3 - Alpha
-        #   4 - Beta
-        #   5 - Production/Stable
-        'Development Status :: 5 - Production/Stable',
-
-        # Indicate who your project is intended for
-        'Intended Audience :: Developers',
-        'Topic :: Software Development',
-
-        # Pick your license as you wish (should match "license" above)
-        'License :: OSI Approved :: MIT License',
-
-        # Specify the Python versions you support here. In particular, ensure
-        # that you indicate whether you support Python 2, Python 3 or both.
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: Implementation :: CPython',
-        'Programming Language :: Python :: Implementation :: PyPy'
-    ],
-
-    # What does your project relate to?
-    keywords='aftership api binding tracking track post mail airmail logistics shipping',
-
-    # You can just specify the packages manually here if your project is
-    # simple. Or you can use find_packages().
-    packages=['aftership'],
-    install_requires=install_requires,
-)
diff --git a/tests/conftest.py b/tests/conftest.py
index 64bc1aa..2410ff6 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -4,7 +4,7 @@
 @pytest.fixture(scope='session')
 def vcr_config():
     return {
-        'cassette_library_dir': 'fixtures/cassettes',
+        'cassette_library_dir': 'tests/fixtures/cassettes',
         'serializer': 'yaml',
         'filter_headers': [('aftership-api-key', 'YOUR_API_KEY_IS_HERE')],
         'record_mode': 'none',