diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..41d3096
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,39 @@
+name: Derbit Client workflow
+
+on:
+  push:
+    branches:
+      - "**"
+  pull_request:
+
+jobs:
+  lint:
+    name: Lint & Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+
+      - name: Upgrade pip
+        run: python -m pip install --upgrade pip
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt
+
+      - name: Black check
+        run: black --check .
+
+      - name: Isort check
+        run: isort --check-only .
+
+      - name: Flake8 check
+        run: flake8 .
+
+      - name: Run pytest
+        run: pytest -v
diff --git a/app/core/database.py b/app/core/database.py
index 615d3de..fa2b68a 100644
--- a/app/core/database.py
+++ b/app/core/database.py
@@ -1,17 +1,5 @@
-from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
 from sqlalchemy.orm import DeclarativeBase
 
-from app.core.config import settings
-
-engine = create_async_engine(settings.database_url, future=True)
-
-async_session = async_sessionmaker(engine, expire_on_commit=False)
-
 
 class Base(DeclarativeBase):
     pass
-
-
-async def get_session():
-    async with async_session() as session:
-        yield session
diff --git a/app/core/session.py b/app/core/session.py
new file mode 100644
index 0000000..cb7a8ee
--- /dev/null
+++ b/app/core/session.py
@@ -0,0 +1,12 @@
+from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
+
+from app.core.config import settings
+
+engine = create_async_engine(settings.database_url, future=True)
+
+async_session = async_sessionmaker(engine, expire_on_commit=False)
+
+
+async def get_session():
+    async with async_session() as session:
+        yield session
diff --git a/app/routers/prices.py b/app/routers/prices.py
index 12499cc..9280fcc 100644
--- a/app/routers/prices.py
+++ b/app/routers/prices.py
@@ -1,7 +1,7 @@
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from app.core.database import get_session
+from app.core.session import get_session
 from app.crud.price_crud import CRUDPrice
 from app.schemas.prices import PriceReadSchema
 
diff --git a/requirements.txt b/requirements.txt
index 46a8557..93c1066 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 aiohappyeyeballs==2.6.1
 aiohttp==3.13.3
 aiosignal==1.4.0
+aiosqlite==0.22.1
 alembic==1.18.1
 amqp==5.3.1
 annotated-doc==0.0.4
@@ -15,6 +16,7 @@ click==8.3.1
 click-didyoumean==0.3.1
 click-plugins==1.1.1.2
 click-repl==0.3.0
+coverage==7.13.1
 fastapi==0.128.0
 flake8==7.3.0
 frozenlist==1.8.0
@@ -43,6 +45,7 @@ pydantic_core==2.41.5
 pyflakes==3.4.0
 Pygments==2.19.2
 pytest==9.0.2
+pytest-asyncio==1.3.0
 python-dateutil==2.9.0.post0
 python-dotenv==1.2.1
 pytokens==0.3.0
diff --git a/tests/test_crud_price.py b/tests/test_crud_price.py
index ff253a4..c4377c9 100644
--- a/tests/test_crud_price.py
+++ b/tests/test_crud_price.py
@@ -26,6 +26,8 @@ async def session():
     async with engine.begin() as conn:
         await conn.run_sync(Base.metadata.drop_all)
 
+    await engine.dispose()
+
 
 @pytest.mark.asyncio
 async def test_save_price(session):