diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9e3b7aa..22a4972 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     env:
+      DJANGO_SETTINGS_MODULE: sage_invoice.tests.testapp.settings.settings
       PYTHONPATH: ${{ github.workspace }}
 
     strategy:
@@ -34,7 +35,7 @@ jobs:
           pip install -r packages/requirements-dev.txt
 
       - name: Run tests with coverage
-        run: pytest --cov=iranian_cities --cov-report=xml
+        run: pytest --cov=sage_invoice --cov-report=xml
 
       - name: Run Tox tests
         run: tox
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..6d440de
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,33 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  release:
+    name: Build and Release
+    runs-on: ubuntu-latest
+
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install poetry
+      - name: Build package
+        run: |
+          poetry build
+      - name: Publish to PyPI
+        run: |
+          poetry publish --username __token__ --password ${{ secrets.PYPI_TOKEN }}
+        env:
+          PYPI_TOKEN: ${{ secrets.PYPI_TOKEN }}
\ No newline at end of file
diff --git a/sage_invoice/tests/testapp/__init__.py b/sage_invoice/tests/testapp/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/sage_invoice/tests/testapp/settings/__init__.py b/sage_invoice/tests/testapp/settings/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/sage_invoice/tests/testapp/settings/asgi.py b/sage_invoice/tests/testapp/settings/asgi.py
new file mode 100644
index 0000000..ceda2d4
--- /dev/null
+++ b/sage_invoice/tests/testapp/settings/asgi.py
@@ -0,0 +1,16 @@
+"""
+ASGI config for settings project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/asgi/
+"""
+
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings.settings")
+
+application = get_asgi_application()
diff --git a/sage_invoice/tests/testapp/settings/settings.py b/sage_invoice/tests/testapp/settings/settings.py
new file mode 100644
index 0000000..cabcff5
--- /dev/null
+++ b/sage_invoice/tests/testapp/settings/settings.py
@@ -0,0 +1,123 @@
+"""
+Django settings for settings project.
+
+Generated by 'django-admin startproject' using Django 4.2.15.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/4.2/ref/settings/
+"""
+
+from pathlib import Path
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = Path(__file__).resolve().parent.parent
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/4.2/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = "django-insecure-q+xq)0(&7dvw#apyukjubu2!aqxh2&9^r8)yl94tu86g%5^fks"
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    "django.contrib.admin",
+    "django.contrib.auth",
+    "django.contrib.contenttypes",
+    "django.contrib.sessions",
+    "django.contrib.messages",
+    "django.contrib.staticfiles",
+]
+
+MIDDLEWARE = [
+    "django.middleware.security.SecurityMiddleware",
+    "django.contrib.sessions.middleware.SessionMiddleware",
+    "django.middleware.common.CommonMiddleware",
+    "django.middleware.csrf.CsrfViewMiddleware",
+    "django.contrib.auth.middleware.AuthenticationMiddleware",
+    "django.contrib.messages.middleware.MessageMiddleware",
+    "django.middleware.clickjacking.XFrameOptionsMiddleware",
+]
+
+ROOT_URLCONF = "settings.urls"
+
+TEMPLATES = [
+    {
+        "BACKEND": "django.template.backends.django.DjangoTemplates",
+        "DIRS": [],
+        "APP_DIRS": True,
+        "OPTIONS": {
+            "context_processors": [
+                "django.template.context_processors.debug",
+                "django.template.context_processors.request",
+                "django.contrib.auth.context_processors.auth",
+                "django.contrib.messages.context_processors.messages",
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = "settings.wsgi.application"
+
+
+# Database
+# https://docs.djangoproject.com/en/4.2/ref/settings/#databases
+
+DATABASES = {
+    "default": {
+        "ENGINE": "django.db.backends.sqlite3",
+        "NAME": BASE_DIR / "db.sqlite3",
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/4.2/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
+    },
+    {
+        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
+    },
+    {
+        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
+    },
+    {
+        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/4.2/topics/i18n/
+
+LANGUAGE_CODE = "en-us"
+
+TIME_ZONE = "UTC"
+
+USE_I18N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/4.2/howto/static-files/
+
+STATIC_URL = "static/"
+
+# Default primary key field type
+# https://docs.djangoproject.com/en/4.2/ref/settings/#default-auto-field
+
+DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
diff --git a/sage_invoice/tests/testapp/settings/urls.py b/sage_invoice/tests/testapp/settings/urls.py
new file mode 100644
index 0000000..24152af
--- /dev/null
+++ b/sage_invoice/tests/testapp/settings/urls.py
@@ -0,0 +1,23 @@
+"""
+URL configuration for settings project.
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/4.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+
+from django.contrib import admin
+from django.urls import path
+
+urlpatterns = [
+    path("admin/", admin.site.urls),
+]
diff --git a/sage_invoice/tests/testapp/settings/wsgi.py b/sage_invoice/tests/testapp/settings/wsgi.py
new file mode 100644
index 0000000..c4a6a79
--- /dev/null
+++ b/sage_invoice/tests/testapp/settings/wsgi.py
@@ -0,0 +1,16 @@
+"""
+WSGI config for settings project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings.settings")
+
+application = get_wsgi_application()