diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..e90806a
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,55 @@
+name: ci
+
+on:
+  pull_request:
+    paths-ignore:
+      - '*.md'
+      - 'alice/VERSION'
+    branches:
+      - master
+
+env:
+  ONBOARDING_API_KEY: ${{ secrets.ONBOARDING_API_KEY }}
+  ONBOARDING_SANDBOX_TOKEN: ${{ secrets.ONBOARDING_SANDBOX_TOKEN }}
+  CONCURRENT_TESTING: True
+
+jobs:
+  ci:
+    strategy:
+      max-parallel: 4
+      matrix:
+        os: [ macOS-latest, ubuntu-latest ]
+        python-version: [3.7, 3.8, 3.9]
+    runs-on: ${{matrix.os}}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+      - uses: actions/cache@v2
+        with:
+          path: ${{ env.pythonLocation }}
+          key: ${{ env.pythonLocation }}-${{ hashFiles('setup.py') }}-${{ hashFiles('requirements.txt') }}-${{ hashFiles('dev-requirements.txt') }}
+      - name: Install Requirements
+        run: |
+          pip install lume
+          lume -install
+      - name: Lint
+        run: lume -lint
+      - name: Check Requirements
+        run: lume -check-requirements
+      - name: Test [pytest]
+        run: lume -test
+      - name: Example [Onboarding]
+        run: python examples/onboarding.py
+      - name: Example [Onboarding with Identification]
+        run: python examples/onboarding_with_identification.py
+      - name: Example [Onboarding with Certificate]
+        run: python examples/onboarding_with_certificate.py
+      - name: Example [Onboarding with Screening]
+        run: python examples/onboarding_with_screening.py
+      - name: Example [Auth]
+        run: python examples/auth.py
+      - name: Example [Sandbox]
+        run: python examples/sandbox.py
diff --git a/.github/workflows/pypi.yml b/.github/workflows/pypi.yml
index 8b5cc7f..644dc88 100644
--- a/.github/workflows/pypi.yml
+++ b/.github/workflows/pypi.yml
@@ -11,6 +11,7 @@ env:
   ONBOARDING_API_KEY: ${{ secrets.ONBOARDING_API_KEY }}
   ONBOARDING_SANDBOX_TOKEN: ${{ secrets.ONBOARDING_SANDBOX_TOKEN }}
   ALICE_GITHUB_ACCESS_TOKEN: ${{ secrets.ALICE_GITHUB_ACCESS_TOKEN }}
+  CONCURRENT_TESTING: True
 
 jobs:
   ci:
@@ -18,48 +19,26 @@ jobs:
       max-parallel: 4
       matrix:
         os: [ macOS-latest, ubuntu-latest ]
-        python-version: [3.8]
+        python-version: [3.7, 3.8, 3.9]
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v1
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: actions/cache@v1
-        if: startsWith(runner.os, 'Linux')
+      - uses: actions/cache@v2
         with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/dev.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
-      - uses: actions/cache@v1
-        if: startsWith(runner.os, 'macOS')
-        with:
-          path: ~/Library/Caches/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/dev.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
-      - uses: actions/cache@v1
-        if: startsWith(runner.os, 'Windows')
-        with:
-          path: ~\AppData\Local\pip\Cache
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/dev.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
-      - name: Install requirements
-        run: |
-          pip install -r requirements/dev.txt
-      - name: Lint with black & flake8
+          path: ${{ env.pythonLocation }}
+          key: ${{ env.pythonLocation }}-${{ hashFiles('setup.py') }}-${{ hashFiles('requirements.txt') }}-${{ hashFiles('dev-requirements.txt') }}
+      - name: Install Requirements
         run: |
-          black .
-          flake8 alice
-      - name: Install package
-        run: |
-          pip install -e . # Dependencies are also included in the setup.py
+          pip install lume
+          lume -install
+      - name: Lint
+        run: lume -lint
       - name: Test [pytest]
-        run: |
-          pytest --tb=no
+        run: lume -test
       - name: Example [Onboarding]
         run: python examples/onboarding.py
       - name: Example [Onboarding with Identification]
@@ -96,7 +75,7 @@ jobs:
     - name: Git - Commit VERSION File
       run: |
         git config --global user.email "dev@alicebiometrics.com"
-        git config --global user.name "ALiCE Biometrics"
+        git config --global user.name "Alice Biometrics"
         git commit -m "Update version to ${RELEASE_VERSION}"
     - name: Push changes
       uses: alice-biometrics/github-push-action@master
diff --git a/README.md b/README.md
index ad261d9..30d2dc1 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 
 The aim of this Python package is to manage the authentication and backend operations against ALiCE Onboarding API.
 
-If you want more information about how to integrate with ALiCE technology, please contact us at support@alicebiometrics.com.
+If you want more information about how to integrate with Alice technology, please contact us at support@alicebiometrics.com.
 
 ## Table of Contents
 - [Requirements](#requirements)
diff --git a/alice/auth/auth_errors.py b/alice/auth/auth_errors.py
index f22f15f..a60445b 100644
--- a/alice/auth/auth_errors.py
+++ b/alice/auth/auth_errors.py
@@ -1,6 +1,6 @@
+from dataclasses import dataclass
 from typing import Dict
 
-from dataclasses import dataclass
 from meiga import Error
 from requests import Response
 
diff --git a/alice/config.py b/alice/config.py
index 480be8c..9b7ae1c 100644
--- a/alice/config.py
+++ b/alice/config.py
@@ -1,8 +1,9 @@
-from dataclasses import dataclass
+from meiga import Error
+from pydantic.dataclasses import dataclass
 
 
 @dataclass
-class Config:
+class Config(Error):
     onboarding_url: str = "https://apis.alicebiometrics.com/onboarding"
     sandbox_url: str = "https://apis.alicebiometrics.com/onboarding/sandbox"
     api_key: str = None
diff --git a/alice/onboarding/device_info.py b/alice/onboarding/device_info.py
index d2bde4f..49c8d76 100644
--- a/alice/onboarding/device_info.py
+++ b/alice/onboarding/device_info.py
@@ -1,12 +1,9 @@
 from typing import Optional
 
-from dataclasses import dataclass
-from dataclasses_json import dataclass_json
+from pydantic import BaseModel
 
 
-@dataclass_json
-@dataclass
-class DeviceInfo:
+class DeviceInfo(BaseModel):
     device_platform: Optional[str] = None
     device_platform_version: Optional[str] = None
     device_model: Optional[str] = None
diff --git a/alice/onboarding/onboarding.py b/alice/onboarding/onboarding.py
index ba12f1c..4583a44 100644
--- a/alice/onboarding/onboarding.py
+++ b/alice/onboarding/onboarding.py
@@ -1080,7 +1080,6 @@ def screening_monitor_open_alerts(
         response = self.onboarding_client.screening_monitor_open_alerts(
             start_index=start_index, size=size, verbose=verbose
         )
-
         if response.status_code == 200:
             return Success(response.json())
         else:
diff --git a/alice/onboarding/onboarding_client.py b/alice/onboarding/onboarding_client.py
index e984114..9a80f64 100644
--- a/alice/onboarding/onboarding_client.py
+++ b/alice/onboarding/onboarding_client.py
@@ -95,10 +95,10 @@ def create_user(
         data = None
         if user_info:
             data = data if data is not None else {}
-            data.update(json.loads(user_info.to_json()))
+            data.update(user_info.dict())
         if device_info:
             data = data if data is not None else {}
-            data.update(json.loads(device_info.to_json()))
+            data.update(device_info.dict())
 
         response = requests.post(f"{self.url}/user", headers=headers, data=data)
 
diff --git a/alice/onboarding/onboarding_errors.py b/alice/onboarding/onboarding_errors.py
index 4f70728..30eb405 100644
--- a/alice/onboarding/onboarding_errors.py
+++ b/alice/onboarding/onboarding_errors.py
@@ -1,7 +1,7 @@
-from typing import Dict
+from typing import Any, Dict, Optional
 
-from dataclasses import dataclass
 from meiga import Error
+from pydantic.dataclasses import dataclass
 from requests import Response
 
 
@@ -9,7 +9,7 @@
 class OnboardingError(Error):
     operation: str
     code: int
-    message: Dict[str, str]
+    message: Optional[Dict[str, Any]] = None
 
     def __str__(self):
         return self.__repr__()
diff --git a/alice/onboarding/user_info.py b/alice/onboarding/user_info.py
index d51b0c2..690edaf 100644
--- a/alice/onboarding/user_info.py
+++ b/alice/onboarding/user_info.py
@@ -1,12 +1,9 @@
 from typing import Optional
 
-from dataclasses import dataclass
-from dataclasses_json import dataclass_json
+from pydantic import BaseModel
 
 
-@dataclass_json
-@dataclass
-class UserInfo:
+class UserInfo(BaseModel):
     first_name: Optional[str] = None
     last_name: Optional[str] = None
     email: Optional[str] = None
diff --git a/alice/public_api.py b/alice/public_api.py
index b155293..98d4d97 100644
--- a/alice/public_api.py
+++ b/alice/public_api.py
@@ -1,7 +1,7 @@
 # coding=utf-8
 # Copyright (C) 2019+ Alice, Vigo, Spain
 
-"""Public API of ALiCE Onboarding Python SDK"""
+"""Public API of Alice Onboarding Python SDK"""
 
 # Modules
 from alice.webhooks.webhook import Webhook
@@ -10,18 +10,18 @@
 
 modules = []
 
+from alice.auth.auth import Auth
+from alice.auth.auth_client import AuthClient
+from alice.config import Config
+from alice.onboarding.decision import Decision
+from alice.onboarding.device_info import DeviceInfo
+
 # Classes
 from alice.onboarding.onboarding import Onboarding
 from alice.onboarding.onboarding_client import OnboardingClient
 from alice.onboarding.user_info import UserInfo
-from alice.onboarding.device_info import DeviceInfo
-from alice.onboarding.decision import Decision
-from alice.auth.auth import Auth
-from alice.auth.auth_client import AuthClient
 from alice.sandbox.sandbox import Sandbox
 from alice.sandbox.sandbox_client import SandboxClient
-from alice.config import Config
-
 
 classes = [
     "Onboarding",
diff --git a/alice/sandbox/sandbox_client.py b/alice/sandbox/sandbox_client.py
index 70b6a79..da915f6 100644
--- a/alice/sandbox/sandbox_client.py
+++ b/alice/sandbox/sandbox_client.py
@@ -1,12 +1,8 @@
-import json
+from requests import Response, request
 
-from requests import request, Response
-
-from alice.onboarding.tools import timeit, print_intro, print_response
-
-from alice.onboarding.user_info import UserInfo
 from alice.onboarding.device_info import DeviceInfo
-
+from alice.onboarding.tools import print_intro, print_response, timeit
+from alice.onboarding.user_info import UserInfo
 
 DEFAULT_URL = "https://apis.alicebiometrics.com/onboarding/sandbox"
 
@@ -76,10 +72,10 @@ def create_user(
         data = None
         if user_info:
             data = data if data is not None else {}
-            data.update(json.loads(user_info.to_json()))
+            data.update(user_info.dict())
         if device_info:
             data = data if data is not None else {}
-            data.update(json.loads(device_info.to_json()))
+            data.update(device_info.dict())
 
         response = request("POST", self.url + "/user", headers=headers, data=data)
 
diff --git a/alice/sandbox/sandbox_errors.py b/alice/sandbox/sandbox_errors.py
index c3fd3c4..ea516a9 100644
--- a/alice/sandbox/sandbox_errors.py
+++ b/alice/sandbox/sandbox_errors.py
@@ -1,7 +1,7 @@
-from typing import Dict
+from typing import Any, Dict, Optional
 
-from dataclasses import dataclass
 from meiga import Error
+from pydantic.dataclasses import dataclass
 from requests import Response
 
 
@@ -9,7 +9,7 @@
 class SandboxError(Error):
     operation: str
     code: int
-    message: Dict[str, str]
+    message: Optional[Dict[str, Any]] = None
 
     def __repr__(self):
         return f"[SandboxError: [operation: {self.operation} | code: {self.code} | message: {self.message}]]"
diff --git a/alice/webhooks/webhooks.py b/alice/webhooks/webhooks.py
index 4afd8b4..eb79e4a 100644
--- a/alice/webhooks/webhooks.py
+++ b/alice/webhooks/webhooks.py
@@ -1,10 +1,10 @@
 from typing import Dict, List
 
-from meiga import Result, Success, Failure, isSuccess
+from meiga import Failure, Result, Success, isSuccess
 
+from alice.auth.auth import Auth
 from alice.config import Config
 from alice.onboarding.onboarding_errors import OnboardingError
-from alice.auth.auth import Auth
 from alice.webhooks.webhook import Webhook
 from alice.webhooks.webhooks_client import WebhooksClient
 
@@ -63,7 +63,7 @@ def get_available_events(
 
     def create_webhook(
         self, webhook: Webhook, verbose: bool = False
-    ) -> Result[Dict, OnboardingError]:
+    ) -> Result[str, OnboardingError]:
         """
 
         It creates a new Webhook in the onboarding service.
diff --git a/lume.yml b/lume.yml
new file mode 100644
index 0000000..ca30a84
--- /dev/null
+++ b/lume.yml
@@ -0,0 +1,23 @@
+name: onboarding-python
+
+install:
+  run:
+    - pip install --upgrade --upgrade-strategy eager -r requirements/dev-requirements.txt -r requirements/requirements.txt
+    - pip install -e .
+steps:
+  clean:
+    run:
+    - rm -f .coverage
+    - rm -rf output
+    - rm -rf .pytest_cache
+    - find . | grep -E "(__pycache__|\.pyc|\.pyo$)" | xargs rm -rf
+  lint:
+    run:
+      - black --check .
+      - flake8 alice
+  check-requirements:
+    run: safety check -r requirements/requirements.txt
+  static-analysis:
+    run: mypy --namespace-packages alice
+  test:
+    run: pytest
\ No newline at end of file
diff --git a/pytest.ini b/pytest.ini
new file mode 100644
index 0000000..0377058
--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,16 @@
+# Configuration of py.test
+[pytest]
+markers=unit
+addopts=tests
+        -v
+        --color=yes
+        --durations=10
+filterwarnings =
+    error
+    ignore::DeprecationWarning
+
+python_files=test_*.py
+python_classes=Test*
+python_functions=test_* should_
+
+norecursedirs = examples alice requirements *.egg-info .git resources
\ No newline at end of file
diff --git a/requirements/dev-requirements.txt b/requirements/dev-requirements.txt
new file mode 100644
index 0000000..7c25035
--- /dev/null
+++ b/requirements/dev-requirements.txt
@@ -0,0 +1,12 @@
+black==21.11b1
+flake8==4.0.1
+isort==5.6.4
+pytest==5.0.1
+pytest-cov==2.5.1
+pytest-mock==1.7.1
+pytest-env==0.6.2
+pytest-variables[yaml]==1.9.0
+pytest-clarity==1.0.1
+pre-commit==2.15.0
+mypy==0.910
+safety==1.10.3
\ No newline at end of file
diff --git a/requirements/dev.txt b/requirements/dev.txt
deleted file mode 100644
index c680918..0000000
--- a/requirements/dev.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-pytest
-flake8==3.7.7
-black==21.6b0
-isort==5.6.4
-pre-commit==2.13.0
-pytest-clarity==0.2.0a1
-pyjwt==2.1.0
-requests>=2.18.0
-dataclasses>=0.6
-dataclasses-json>=0.2.14
-meiga>=1.2.0
\ No newline at end of file
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
new file mode 100644
index 0000000..3814e41
--- /dev/null
+++ b/requirements/requirements.txt
@@ -0,0 +1,4 @@
+pyjwt==2.3.0
+pydantic==1.8.2
+requests==2.26.0
+meiga==1.2.12
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 7105570..ff28d50 100644
--- a/setup.py
+++ b/setup.py
@@ -1,17 +1,23 @@
+import os
+
 from setuptools import setup
 
+CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
+PACKAGE_NAME = "alice-onboarding"
 VERSION = open("alice/VERSION", "r").read()
-REQUIRES = [
-    "pyjwt==2.1.0",
-    "requests>=2.18.0",
-    "dataclasses>=0.6",
-    "dataclasses-json>=0.2.14",
-    "meiga==1.2.12",
-]
+
+with open(os.path.join(CURRENT_DIR, "README.md")) as fid:
+    README = fid.read()
+
+with open("requirements/requirements.txt") as f:
+    REQUIRES = f.read().splitlines()
 
 setup(
-    name="alice-onboarding",
+    name=PACKAGE_NAME,
     version=VERSION,
+    long_description=README,
+    long_description_content_type="text/markdown",
+    keywords=["onboarding", "biometrics", "kyc", "alice"],
     description="Alice Onboarding Python SDK",
     url="https://github.com/alice-biometrics/onboarding-python",
     author="Alice Biometrics",
diff --git a/tests/test_integration_auth.py b/tests/test_integration_auth.py
index 40d9740..819e65d 100644
--- a/tests/test_integration_auth.py
+++ b/tests/test_integration_auth.py
@@ -1,8 +1,10 @@
+import pytest
 from meiga.assertions import assert_failure
 
 from alice import Auth, Config
 
 
+@pytest.mark.unit
 def test_should_return_an_error_when_the_api_key_is_not_configured():
 
     config = Config()
@@ -13,6 +15,7 @@ def test_should_return_an_error_when_the_api_key_is_not_configured():
     assert_failure(result)
 
 
+@pytest.mark.unit
 def test_should_create_a_valid_backend_token(given_valid_api_key):
 
     config = Config(api_key=given_valid_api_key)
@@ -23,6 +26,7 @@ def test_should_create_a_valid_backend_token(given_valid_api_key):
     assert backend_token is not None
 
 
+@pytest.mark.unit
 def test_should_create_a_valid_backend_token_with_user(given_valid_api_key):
 
     config = Config(api_key=given_valid_api_key)
@@ -33,6 +37,7 @@ def test_should_create_a_valid_backend_token_with_user(given_valid_api_key):
     assert backend_token_with_user is not None
 
 
+@pytest.mark.unit
 def test_should_create_a_valid_user_token(given_valid_api_key):
 
     config = Config(api_key=given_valid_api_key)
diff --git a/tests/test_integration_onboarding.py b/tests/test_integration_onboarding.py
index 30eb89b..0adf77e 100644
--- a/tests/test_integration_onboarding.py
+++ b/tests/test_integration_onboarding.py
@@ -1,12 +1,14 @@
 from typing import Dict
 
+import pytest
 from meiga import Error, Result, Success
 from meiga.assertions import assert_failure, assert_success
 from meiga.decorators import meiga
 
-from alice import Config, Onboarding
+from alice import Config, DeviceInfo, Onboarding, UserInfo
 
 
+@pytest.mark.unit
 def test_should_return_an_error_when_the_api_key_is_not_configured():
 
     config = Config()
@@ -17,6 +19,7 @@ def test_should_return_an_error_when_the_api_key_is_not_configured():
     assert_failure(result)
 
 
+@pytest.mark.unit
 def test_should_do_complete_onboarding_process(
     given_valid_api_key,
     given_any_selfie_image_media_data,
@@ -30,7 +33,10 @@ def do_complete_onboarding() -> Result[dict, Error]:
 
         onboarding = Onboarding.from_config(config)
 
-        user_id = onboarding.create_user().unwrap_or_return()
+        user_id = onboarding.create_user(
+            user_info=UserInfo(first_name="Alice", last_name="Biometrics"),
+            device_info=DeviceInfo(device_platform="Android"),
+        ).unwrap_or_return()
         onboarding.add_selfie(
             user_id=user_id, media_data=given_any_selfie_image_media_data
         ).unwrap_or_return()
diff --git a/tests/test_integration_sandbox.py b/tests/test_integration_sandbox.py
index e1bb518..5bfbd6a 100644
--- a/tests/test_integration_sandbox.py
+++ b/tests/test_integration_sandbox.py
@@ -1,8 +1,10 @@
+import pytest
 from meiga.assertions import assert_failure, assert_success
 
-from alice import Sandbox, Config, UserInfo
+from alice import Config, DeviceInfo, Sandbox, UserInfo
 
 
+@pytest.mark.unit
 def test_should_return_an_error_when_the_sandbox_token_is_not_configured():
 
     config = Config()
@@ -13,6 +15,7 @@ def test_should_return_an_error_when_the_sandbox_token_is_not_configured():
     assert_failure(result)
 
 
+@pytest.mark.unit
 def test_should_create_a_user_and_get_user_token_and_delete_it(
     given_valid_sandbox_token, given_any_valid_mail
 ):
@@ -21,7 +24,8 @@ def test_should_create_a_user_and_get_user_token_and_delete_it(
     sandbox = Sandbox.from_config(config)
 
     result_create_user = sandbox.create_user(
-        user_info=UserInfo(email=given_any_valid_mail)
+        user_info=UserInfo(email=given_any_valid_mail),
+        device_info=DeviceInfo(device_platform="Android"),
     )
     assert_success(result_create_user)
 
diff --git a/tests/test_integration_webhooks.py b/tests/test_integration_webhooks.py
index 1e3fab5..4311364 100644
--- a/tests/test_integration_webhooks.py
+++ b/tests/test_integration_webhooks.py
@@ -1,11 +1,14 @@
+import os
 import secrets
 from time import sleep
 
+import pytest
 from meiga.assertions import assert_failure, assert_success
 
-from alice import Config, Webhooks, Webhook
+from alice import Config, Webhook, Webhooks
 
 
+@pytest.mark.unit
 def test_should_return_an_error_when_the_api_key_is_not_configured():
 
     config = Config()
@@ -16,6 +19,7 @@ def test_should_return_an_error_when_the_api_key_is_not_configured():
     assert_failure(result)
 
 
+@pytest.mark.unit
 def test_should_execute_all_webhook_lifecycle(given_valid_api_key):
     config = Config(api_key=given_valid_api_key)
     webhooks_client = Webhooks.from_config(config)
@@ -92,6 +96,13 @@ def test_should_execute_all_webhook_lifecycle(given_valid_api_key):
 
     sleep(3.0)
 
-    # Expected not found error when Retrieve all webhook results of an deleted webhook
-    result = webhooks_client.get_webhook_results(webhook_id)
-    assert_failure(result)
+    assert_webhook_results_status(webhooks_client, webhook_id)
+
+
+def assert_webhook_results_status(webhooks_client: Webhooks, webhook_id: str):
+    if os.getenv("CONCURRENT_TESTING", False):
+        webhooks_client.get_webhook_results(webhook_id)
+    else:
+        # Expected not found error when Retrieve all webhook results of an deleted webhook
+        result = webhooks_client.get_webhook_results(webhook_id)
+        assert_failure(result)