diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index c89c7f9..888c72b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -27,7 +27,11 @@ jobs:
     - name: Pull MongoDB
       run: |
         docker pull mongo:latest
+    - name: Pull PostgreSQL
+      run: |
+        docker pull postgres:latest
     - name: Run tests
       run: |
         docker run -p 27017:27017 -d mongo:latest
+        docker run -p 5432:5432 -e POSTGRES_USER=suppgram -e POSTGRES_PASSWORD=test -e POSTGRES_DB=suppgram_test -d postgres:latest
         PYTHONPATH=. pytest .
diff --git a/docs/development/contribution_guide.md b/docs/development/contribution_guide.md
index a6287df..6e0a9b4 100644
--- a/docs/development/contribution_guide.md
+++ b/docs/development/contribution_guide.md
@@ -12,10 +12,11 @@ $ python -m pip install -r requirements.txt
 
 ## Running tests
 
-To run all tests, you'll need a running MongoDB instance. The easiest way to get
+To run all tests, you'll need running MongoDB and PostgreSQL instances. The easiest way to get
 one is by using Docker:
 ```shell
 $ docker run -p 27107:27017 -d mongo:latest
+$ docker run -p 5432:5432 -e POSTGRES_USER=suppgram -e POSTGRES_PASSWORD=test -e POSTGRES_DB=suppgram_test -d postgres:latest
 ```
 
 Then the tests can be run via `pytest`:
diff --git a/requirements.txt b/requirements.txt
index 3304969..3b2d339 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 SQLAlchemy~=2.0.22
 aioconsole~=0.6.2
 aiosqlite~=0.19.0
+asyncpg~=0.29.0
 click~=8.1.7
 motor~=3.3.2
 mypy-extensions==1.0.0
diff --git a/tests/bridges/test_sqlalchemy_telegram.py b/tests/bridges/test_sqlalchemy_telegram.py
index eb664da..60b30e8 100644
--- a/tests/bridges/test_sqlalchemy_telegram.py
+++ b/tests/bridges/test_sqlalchemy_telegram.py
@@ -11,10 +11,10 @@
 
 class TestSQLAlchemyTelegramBridge(TelegramStorageTestSuite):
     @pytest_asyncio.fixture(autouse=True)
-    async def _create_storage(self, sqlite_engine, sqlalchemy_storage):
+    async def _create_storage(self, sqlite_engine, sqlite_sqlalchemy_storage):
         # SQLAlchemyStorage implementation is needed for related tables to exist.
         self.telegram_storage = SQLAlchemyTelegramBridge(sqlite_engine)
-        self.storage = sqlalchemy_storage
+        self.storage = sqlite_sqlalchemy_storage
         await self.telegram_storage.initialize()
 
     @pytest.fixture(autouse=True)
diff --git a/tests/conftest.py b/tests/conftest.py
index 1468f92..291c35e 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -8,8 +8,8 @@
 import pytest_asyncio
 from motor.core import AgnosticClient, AgnosticDatabase
 from motor.motor_asyncio import AsyncIOMotorClient
-from sqlalchemy import event, Engine
-from sqlalchemy.ext.asyncio import AsyncEngine, create_async_engine
+from sqlalchemy import event, Engine, text
+from sqlalchemy.ext.asyncio import AsyncEngine, create_async_engine, AsyncSession
 
 from suppgram.storage import Storage
 from suppgram.storages.mongodb import MongoDBStorage, Collections
@@ -18,13 +18,17 @@
 pytest_plugins = ("pytest_asyncio",)
 
 
+enable_sqlite_foreign_keys = False
+
+
 @event.listens_for(Engine, "connect")
 def set_sqlite_pragma(dbapi_connection, connection_record):
     # Without this, SQLite will allow violating foreign key
     # constraints and certain tests will fail.
-    cursor = dbapi_connection.cursor()
-    cursor.execute("PRAGMA foreign_keys=ON")
-    cursor.close()
+    if enable_sqlite_foreign_keys:
+        cursor = dbapi_connection.cursor()
+        cursor.execute("PRAGMA foreign_keys=ON")
+        cursor.close()
 
 
 @pytest.fixture(scope="session")
@@ -34,10 +38,53 @@ def sqlite_engine() -> Generator[AsyncEngine, None, None]:
         yield create_async_engine(f"sqlite+aiosqlite:///{filename}", echo=True)
 
 
-@pytest.fixture(scope="session")
-def sqlalchemy_storage(sqlite_engine: AsyncEngine) -> Storage:
+@pytest.fixture
+def sqlite_sqlalchemy_storage(sqlite_engine: AsyncEngine) -> Storage:
+    global enable_sqlite_foreign_keys
     storage = SQLAlchemyStorage(sqlite_engine, Models(sqlite_engine))
     asyncio.run(storage.initialize())
+    enable_sqlite_foreign_keys = True
+    yield storage
+    enable_sqlite_foreign_keys = False
+
+
+async def _clean_postgresql_storage():
+    engine = create_async_engine(
+        f"postgresql+asyncpg://suppgram:test@localhost:5432/suppgram_test", echo=True
+    )
+    async with AsyncSession(bind=engine) as session, session.begin():
+        await session.execute(
+            text(
+                """
+                TRUNCATE TABLE
+                    suppgram_customers,
+                    suppgram_agents,
+                    suppgram_workplaces,
+                    suppgram_conversations,
+                    suppgram_conversation_messages,
+                    suppgram_conversation_tags,
+                    suppgram_conversation_tag_associations
+                """
+            )
+        )
+
+
+@pytest.fixture(scope="session", autouse=True)
+def clean_postgresql_storage():
+    asyncio.ensure_future(_clean_postgresql_storage())
+
+
+@pytest.fixture
+def postgresql_engine() -> AsyncEngine:
+    return create_async_engine(
+        f"postgresql+asyncpg://suppgram:test@localhost:5432/suppgram_test", echo=True
+    )
+
+
+@pytest_asyncio.fixture
+async def postgresql_sqlalchemy_storage(postgresql_engine: AsyncEngine) -> Storage:
+    storage = SQLAlchemyStorage(postgresql_engine, Models(postgresql_engine))
+    await storage.initialize()
     return storage
 
 
diff --git a/tests/storages/test_sqlalchemy.py b/tests/storages/test_sqlalchemy.py
index 395b103..fdf7115 100644
--- a/tests/storages/test_sqlalchemy.py
+++ b/tests/storages/test_sqlalchemy.py
@@ -7,10 +7,23 @@
 pytest_plugins = ("pytest_asyncio",)
 
 
-class TestSQLAlchemyStorage(StorageTestSuite):
+class TestSQLAlchemyStorageWithSQLite(StorageTestSuite):
     @pytest.fixture(autouse=True)
-    def _create_storage(self, sqlalchemy_storage):
-        self.storage = sqlalchemy_storage
+    def _create_storage(self, sqlite_sqlalchemy_storage):
+        self.storage = sqlite_sqlalchemy_storage
+
+    @pytest.fixture(autouse=True)
+    def _make_generate_id(self, generate_sqlite_id: Callable[[], int]):
+        self._generate_id = generate_sqlite_id
+
+    def generate_id(self) -> Any:
+        return self._generate_id()
+
+
+class TestSQLAlchemyStorageWithPostgreSQL(StorageTestSuite):
+    @pytest.fixture(autouse=True)
+    def _create_storage(self, postgresql_sqlalchemy_storage):
+        self.storage = postgresql_sqlalchemy_storage
 
     @pytest.fixture(autouse=True)
     def _make_generate_id(self, generate_sqlite_id: Callable[[], int]):