diff --git a/src/backend/app/drones/drone_crud.py b/src/backend/app/drones/drone_crud.py
index 0bb50783..1494091f 100644
--- a/src/backend/app/drones/drone_crud.py
+++ b/src/backend/app/drones/drone_crud.py
@@ -1,14 +1,15 @@
 from app.drones import drone_schemas
 from app.models.enums import HTTPStatus
-from databases import Database
 from loguru import logger as log
 from fastapi import HTTPException
-from asyncpg import UniqueViolationError
+from psycopg import Connection
+
+# from asyncpg import UniqueViolationError
 from typing import List
 from app.drones.drone_schemas import DroneOut
 
 
-async def read_all_drones(db: Database) -> List[DroneOut]:
+async def read_all_drones(db: Connection) -> List[DroneOut]:
     """
     Retrieves all drone records from the database.
 
@@ -32,7 +33,7 @@ async def read_all_drones(db: Database) -> List[DroneOut]:
         ) from e
 
 
-async def delete_drone(db: Database, drone_id: int) -> bool:
+async def delete_drone(db: Connection, drone_id: int) -> bool:
     """
     Deletes a drone record from the database, along with associated drone flights.
 
@@ -63,7 +64,7 @@ async def delete_drone(db: Database, drone_id: int) -> bool:
         ) from e
 
 
-async def get_drone(db: Database, drone_id: int):
+async def get_drone(db: Connection, drone_id: int):
     """
     Retrieves a drone record from the database.
 
@@ -89,7 +90,7 @@ async def get_drone(db: Database, drone_id: int):
         ) from e
 
 
-async def create_drone(db: Database, drone_info: drone_schemas.DroneIn):
+async def create_drone(db: Connection, drone_info: drone_schemas.DroneIn):
     """
     Creates a new drone record in the database.
 
@@ -116,12 +117,12 @@ async def create_drone(db: Database, drone_info: drone_schemas.DroneIn):
         result = await db.execute(insert_query, drone_info.__dict__)
         return result
 
-    except UniqueViolationError as e:
-        log.exception("Unique constraint violation: %s", e)
-        raise HTTPException(
-            status_code=HTTPStatus.CONFLICT,
-            detail="A drone with this model already exists",
-        )
+    # except UniqueViolationError as e:
+    #     log.exception("Unique constraint violation: %s", e)
+    #     raise HTTPException(
+    #         status_code=HTTPStatus.CONFLICT,
+    #         detail="A drone with this model already exists",
+    #     )
 
     except Exception as e:
         log.exception(e)
diff --git a/src/backend/app/drones/drone_routes.py b/src/backend/app/drones/drone_routes.py
index a3fc232e..4fee8b4f 100644
--- a/src/backend/app/drones/drone_routes.py
+++ b/src/backend/app/drones/drone_routes.py
@@ -1,11 +1,12 @@
+from typing import Annotated
 from app.users.user_deps import login_required
 from app.users.user_schemas import AuthUser
 from app.models.enums import HTTPStatus
 from fastapi import APIRouter, Depends, HTTPException
-from app.db.database import get_db
+from app.db import database
 from app.config import settings
 from app.drones import drone_schemas
-from databases import Database
+from psycopg import Connection
 from app.drones import drone_crud
 from typing import List
 
@@ -18,8 +19,8 @@
 
 @router.get("/", tags=["Drones"], response_model=List[drone_schemas.DroneOut])
 async def read_drones(
-    db: Database = Depends(get_db),
-    user_data: AuthUser = Depends(login_required),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """
     Retrieves all drone records from the database.
@@ -38,8 +39,8 @@ async def read_drones(
 @router.delete("/{drone_id}", tags=["Drones"])
 async def delete_drone(
     drone_id: int,
-    db: Database = Depends(get_db),
-    user_data: AuthUser = Depends(login_required),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """
     Deletes a drone record from the database.
@@ -61,8 +62,8 @@ async def delete_drone(
 @router.post("/create_drone", tags=["Drones"])
 async def create_drone(
     drone_info: drone_schemas.DroneIn,
-    db: Database = Depends(get_db),
-    user_data: AuthUser = Depends(login_required),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """
     Creates a new drone record in the database.
@@ -86,8 +87,8 @@ async def create_drone(
 @router.get("/{drone_id}", tags=["Drones"], response_model=drone_schemas.DroneOut)
 async def read_drone(
     drone_id: int,
-    db: Database = Depends(get_db),
-    user_data: AuthUser = Depends(login_required),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """
     Retrieves a drone record from the database.
diff --git a/src/backend/app/projects/project_schemas.py b/src/backend/app/projects/project_schemas.py
index e83c6a00..cb4f815d 100644
--- a/src/backend/app/projects/project_schemas.py
+++ b/src/backend/app/projects/project_schemas.py
@@ -47,8 +47,6 @@ class ProjectIn(BaseModel):
     dem_url: Optional[str] = None
     gsd_cm_px: float = None
     is_terrain_follow: bool = False
-    # TODO change all references outline_geojson --> outline
-    # TODO also no_fly_zones
     outline: Annotated[
         FeatureCollection | Feature | Polygon, AfterValidator(validate_geojson)
     ]
diff --git a/src/backend/app/tasks/task_crud.py b/src/backend/app/tasks/task_crud.py
index 4044abc8..32a75897 100644
--- a/src/backend/app/tasks/task_crud.py
+++ b/src/backend/app/tasks/task_crud.py
@@ -1,11 +1,11 @@
 import uuid
-from databases import Database
 from app.models.enums import HTTPStatus, State
 from fastapi import HTTPException
 from loguru import logger as log
+from psycopg import Connection
 
 
-async def get_tasks_by_user(user_id: str, db: Database):
+async def get_tasks_by_user(user_id: str, db: Connection):
     try:
         query = """WITH task_details AS (
         SELECT
@@ -42,7 +42,7 @@ async def get_tasks_by_user(user_id: str, db: Database):
         ) from e
 
 
-async def get_all_tasks(db: Database, project_id: uuid.UUID):
+async def get_all_tasks(db: Connection, project_id: uuid.UUID):
     query = """
         SELECT id FROM tasks WHERE project_id = :project_id
     """
@@ -56,7 +56,7 @@ async def get_all_tasks(db: Database, project_id: uuid.UUID):
     return task_ids
 
 
-async def all_tasks_states(db: Database, project_id: uuid.UUID):
+async def all_tasks_states(db: Connection, project_id: uuid.UUID):
     query = """
         SELECT DISTINCT ON (task_id) project_id, task_id, state
         FROM task_events
@@ -95,7 +95,11 @@ async def all_tasks_states(db: Database, project_id: uuid.UUID):
 
 
 async def request_mapping(
-    db: Database, project_id: uuid.UUID, task_id: uuid.UUID, user_id: str, comment: str
+    db: Connection,
+    project_id: uuid.UUID,
+    task_id: uuid.UUID,
+    user_id: str,
+    comment: str,
 ):
     query = """
             WITH last AS (
@@ -140,7 +144,7 @@ async def request_mapping(
 
 
 async def update_task_state(
-    db: Database,
+    db: Connection,
     project_id: uuid.UUID,
     task_id: uuid.UUID,
     user_id: str,
@@ -183,7 +187,7 @@ async def update_task_state(
 
 
 async def get_requested_user_id(
-    db: Database, project_id: uuid.UUID, task_id: uuid.UUID
+    db: Connection, project_id: uuid.UUID, task_id: uuid.UUID
 ):
     query = """
         SELECT user_id
@@ -204,7 +208,7 @@ async def get_requested_user_id(
     return result["user_id"]
 
 
-async def get_project_task_by_id(db: Database, user_id: str):
+async def get_project_task_by_id(db: Connection, user_id: str):
     """Get a list of pending tasks created by a specific user (project creator)."""
     raw_sql = """
         SELECT t.id AS task_id, te.event_id, te.user_id, te.project_id, te.comment, te.state, te.created_at
diff --git a/src/backend/app/tasks/task_routes.py b/src/backend/app/tasks/task_routes.py
index 87caebcf..c5d78b32 100644
--- a/src/backend/app/tasks/task_routes.py
+++ b/src/backend/app/tasks/task_routes.py
@@ -1,4 +1,5 @@
 import uuid
+from typing import Annotated
 from fastapi import APIRouter, BackgroundTasks, Depends, HTTPException
 from app.config import settings
 from app.models.enums import EventType, State, UserRole
@@ -6,7 +7,7 @@
 from app.users.user_deps import login_required
 from app.users.user_schemas import AuthUser
 from app.users.user_crud import get_user_by_id
-from databases import Database
+from psycopg import Connection
 from app.db import database
 from app.utils import send_notification_email, render_email_template
 from app.projects.project_crud import get_project_by_id
@@ -21,8 +22,8 @@
 
 @router.get("/", response_model=list[task_schemas.UserTasksStatsOut])
 async def list_tasks(
-    db: Database = Depends(database.get_db),
-    user_data: AuthUser = Depends(login_required),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """Get all tasks for a drone user."""
 
@@ -31,7 +32,9 @@ async def list_tasks(
 
 
 @router.get("/states/{project_id}")
-async def task_states(project_id: uuid.UUID, db: Database = Depends(database.get_db)):
+async def task_states(
+    db: Annotated[Connection, Depends(database.get_db)], project_id: uuid.UUID
+):
     """Get all tasks states for a project."""
 
     return await task_crud.all_tasks_states(db, project_id)
@@ -39,12 +42,12 @@ async def task_states(project_id: uuid.UUID, db: Database = Depends(database.get
 
 @router.post("/event/{project_id}/{task_id}")
 async def new_event(
+    db: Annotated[Connection, Depends(database.get_db)],
     background_tasks: BackgroundTasks,
     project_id: uuid.UUID,
     task_id: uuid.UUID,
     detail: task_schemas.NewEvent,
-    user_data: AuthUser = Depends(login_required),
-    db: Database = Depends(database.get_db),
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     user_id = user_data.id
 
@@ -212,8 +215,8 @@ async def new_event(
 
 @router.get("/requested_tasks/pending")
 async def get_pending_tasks(
-    user_data: AuthUser = Depends(login_required),
-    db: Database = Depends(database.get_db),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """Get a list of pending tasks for a project creator."""
     user_id = user_data.id
diff --git a/src/backend/app/users/user_crud.py b/src/backend/app/users/user_crud.py
index af521924..ec649102 100644
--- a/src/backend/app/users/user_crud.py
+++ b/src/backend/app/users/user_crud.py
@@ -5,9 +5,9 @@
 from passlib.context import CryptContext
 from app.db import db_models
 from app.users.user_schemas import AuthUser, ProfileUpdate
-from databases import Database
 from fastapi import HTTPException
 from pydantic import EmailStr
+from psycopg import Connection
 
 
 pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
@@ -61,26 +61,26 @@ def get_password_hash(password: str) -> str:
     return pwd_context.hash(password)
 
 
-async def get_user_by_id(db: Database, id: str):
+async def get_user_by_id(db: Connection, id: str):
     query = "SELECT * FROM users WHERE id = :id LIMIT 1;"
     result = await db.fetch_one(query, {"id": id})
     return result
 
 
-async def get_userprofile_by_userid(db: Database, user_id: str):
+async def get_userprofile_by_userid(db: Connection, user_id: str):
     query = "SELECT * FROM user_profile WHERE user_id = :user_id LIMIT 1;"
     result = await db.fetch_one(query, {"user_id": user_id})
     return result
 
 
-async def get_user_by_email(db: Database, email: str):
+async def get_user_by_email(db: Connection, email: str):
     query = "SELECT * FROM users WHERE email_address = :email LIMIT 1;"
     result = await db.fetch_one(query, {"email": email})
     return result
 
 
 async def authenticate(
-    db: Database, email: EmailStr, password: str
+    db: Connection, email: EmailStr, password: str
 ) -> db_models.DbUser | None:
     db_user = await get_user_by_email(db, email)
     if not db_user:
@@ -91,7 +91,7 @@ async def authenticate(
 
 
 async def get_or_create_user(
-    db: Database,
+    db: Connection,
     user_data: AuthUser,
 ):
     """Get user from User table if exists, else create."""
@@ -132,7 +132,7 @@ async def get_or_create_user(
 
 
 async def update_user_profile(
-    db: Database, user_id: int, profile_update: ProfileUpdate
+    db: Connection, user_id: int, profile_update: ProfileUpdate
 ):
     """
     Update user profile in the database.
diff --git a/src/backend/app/users/user_routes.py b/src/backend/app/users/user_routes.py
index 5bef1d91..eae74869 100644
--- a/src/backend/app/users/user_routes.py
+++ b/src/backend/app/users/user_routes.py
@@ -12,7 +12,7 @@
 from app.users import user_crud
 from app.db import database
 from app.models.enums import HTTPStatus
-from databases import Database
+from psycopg import Connection
 from fastapi.responses import JSONResponse
 from loguru import logger as log
 
@@ -31,7 +31,7 @@
 @router.post("/login/")
 async def login_access_token(
     form_data: Annotated[OAuth2PasswordRequestForm, Depends()],
-    db: Database = Depends(database.get_db),
+    db: Annotated[Connection, Depends(database.get_db)],
 ) -> Token:
     """
     OAuth2 compatible token login, get an access token for future requests
@@ -60,8 +60,8 @@ async def login_access_token(
 async def update_user_profile(
     user_id: str,
     profile_update: ProfileUpdate,
-    db: Database = Depends(database.get_db),
-    user_data: AuthUser = Depends(login_required),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """
     Update user profile based on provided user_id and profile_update data.
@@ -124,7 +124,7 @@ async def callback(request: Request, google_auth=Depends(init_google_auth)):
 
 
 @router.get("/refresh-token", response_model=Token)
-async def update_token(user_data: AuthUser = Depends(login_required)):
+async def update_token(user_data: Annotated[AuthUser, Depends(login_required)]):
     """Refresh access token"""
 
     access_token, refresh_token = await user_crud.create_access_token(
@@ -135,8 +135,8 @@ async def update_token(user_data: AuthUser = Depends(login_required)):
 
 @router.get("/my-info/")
 async def my_data(
-    db: Database = Depends(database.get_db),
-    user_data: AuthUser = Depends(login_required),
+    db: Annotated[Connection, Depends(database.get_db)],
+    user_data: Annotated[AuthUser, Depends(login_required)],
 ):
     """Read access token and get user details from Google"""