diff --git a/src/api/dependacies/db_dep.py b/src/api/dependacies/db_dep.py
index df46f22..12b0f51 100644
--- a/src/api/dependacies/db_dep.py
+++ b/src/api/dependacies/db_dep.py
@@ -1,15 +1,15 @@
 from typing import Annotated, AsyncGenerator
 
 from fastapi import Depends
-from sqlalchemy.ext.asyncio import AsyncSession
 
 from src.core.database import async_session_maker
 from src.core.db_manager import DBManager
+from src.core.interfaces import IUOWDB
 
 
-async def get_db() -> AsyncGenerator[AsyncSession, None]:
+async def get_db() -> AsyncGenerator[IUOWDB, None]:
     async with DBManager(async_session_maker) as db:
         yield db
 
 
-sessionDep = Annotated[AsyncSession, Depends(get_db)]
+sessionDep = Annotated[IUOWDB, Depends(get_db)]
diff --git a/src/core/db_manager.py b/src/core/db_manager.py
index 85f6897..ee461a2 100644
--- a/src/core/db_manager.py
+++ b/src/core/db_manager.py
@@ -1,20 +1,24 @@
+from typing import Any
+
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker
+
 from src.repository.tasks import TasksRepo
 from src.repository.users import UsersRepo
 
 
 class DBManager:
-    def __init__(self, session_factory):
+    def __init__(self, session_factory: async_sessionmaker[AsyncSession]):
         self.session_factory = session_factory
 
-    async def __aenter__(self):
-        self.session = self.session_factory()
+    async def __aenter__(self) -> "DBManager":
+        self.session: AsyncSession = self.session_factory()
         self.user = UsersRepo(self.session)
         self.task = TasksRepo(self.session)
         return self
 
-    async def __aexit__(self, exc_type, exc_val, exc_tb):
+    async def __aexit__(self, exc_type: Any, exc_val: Any, exc_tb: Any) -> None:
         await self.session.rollback()
         await self.session.close()
 
-    async def commit(self):
+    async def commit(self) -> None:
         await self.session.commit()
diff --git a/src/core/interfaces.py b/src/core/interfaces.py
index d863fe3..e63811a 100644
--- a/src/core/interfaces.py
+++ b/src/core/interfaces.py
@@ -1,15 +1,18 @@
-from typing import Protocol
+from typing import Any, Protocol
+
+from sqlalchemy.ext.asyncio import AsyncSession
 
 from src.repository.tasks import TasksRepo
 from src.repository.users import UsersRepo
 
 
 class IUOWDB(Protocol):
+    session: AsyncSession
     user: UsersRepo
     task: TasksRepo
 
     async def __aenter__(self) -> "IUOWDB": ...
 
-    async def __aexit__(self, exc_type, exc_val, exc_tb) -> None: ...
+    async def __aexit__(self, exc_type: Any, exc_val: Any, exc_tb: Any) -> None: ...
 
     async def commit(self) -> None: ...
diff --git a/src/repository/base.py b/src/repository/base.py
index 8a61a9f..56734b3 100644
--- a/src/repository/base.py
+++ b/src/repository/base.py
@@ -7,31 +7,31 @@ from src.core.database import Base
 
 
 class BaseRepo:
-    model: type[Base] = None
+    model: type[Base]
 
     def __init__(self, session):
         self.session = session
 
-    async def get_filtered(self, *filter, **filter_by) -> list[BaseModel | Any]:
+    async def get_filtered(self, *filter, **filter_by) -> list[Base]:
         query = select(self.model).filter(*filter).filter_by(**filter_by)
         result = await self.session.execute(query)
-        model = result.scalars().one_or_none()
-        return model
+        models = result.scalars().all()
+        return models
 
-    async def create_one(self, data: BaseModel):
+    async def create_one(self, data: BaseModel) -> Base:
         statement = insert(self.model).values(data.model_dump()).returning(self.model)
         result = await self.session.execute(statement)
         obj = result.scalar_one()
         return obj
 
-    async def get_one_or_none(self, **filter_by):
+    async def get_one_or_none(self, **filter_by: Any) -> Base | None:
         query = select(self.model).filter_by(**filter_by)
         result = await self.session.execute(query)
         model = result.scalars().one_or_none()
         return model
-    
-    async def get_all(self, *args, **kwargs) -> list[model]:
-        result = await self.get_filtered()
+
+    async def get_all(self, *args, **kwargs) -> list[Base]:
+        result = await self.get_filtered(*args, **kwargs)
         return result
 
     async def delete_one(self, **filter_by) -> None:
diff --git a/src/services/base.py b/src/services/base.py
index ffea73c..0de2a50 100644
--- a/src/services/base.py
+++ b/src/services/base.py
@@ -2,7 +2,7 @@ from src.core.interfaces import IUOWDB
 
 
 class BaseService:
-    session: IUOWDB | None
+    session: IUOWDB 
 
     def __init__(self, session: "IUOWDB"):
         self.session = session