diff --git a/models/mixins.py b/models/mixins.py
index 3aa7c21..c36fd4e 100644
--- a/models/mixins.py
+++ b/models/mixins.py
@@ -1,5 +1,6 @@
 from datetime import datetime
 
+from sqlalchemy import DateTime
 from sqlalchemy.orm import Mapped, mapped_column
 
 
@@ -15,4 +16,6 @@ class SoftDeleteMixin:
 
 
 class CreatedAtMixin:
-    created_at: Mapped[datetime] = mapped_column(nullable=False)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False
+    )
diff --git a/repositories/board.py b/repositories/board.py
index 721a1a8..36c4bc0 100644
--- a/repositories/board.py
+++ b/repositories/board.py
@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import Optional
 
 from sqlalchemy import select
@@ -30,7 +30,7 @@ class BoardRepository(BaseRepository):
 
     async def create(self, data: CreateBoardSchema) -> Board:
         board_data = data.model_dump()
-        board_data["created_at"] = datetime.now()
+        board_data["created_at"] = datetime.now(timezone.utc)
         board = Board(**board_data)
         self.session.add(board)
         await self.session.commit()
diff --git a/repositories/deal.py b/repositories/deal.py
index 54a076d..a83fbcb 100644
--- a/repositories/deal.py
+++ b/repositories/deal.py
@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import Optional
 
 from sqlalchemy import select
@@ -25,7 +25,7 @@ class DealRepository(BaseRepository):
 
     async def create(self, data: CreateDealSchema) -> Deal:
         deal_data = data.model_dump()
-        deal_data["created_at"] = datetime.now()
+        deal_data["created_at"] = datetime.now(timezone.utc)
         deal = Deal(**deal_data)
         self.session.add(deal)
         await self.session.commit()
diff --git a/repositories/project.py b/repositories/project.py
index c1f69df..c445579 100644
--- a/repositories/project.py
+++ b/repositories/project.py
@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import Optional
 
 from sqlalchemy import select
@@ -26,7 +26,7 @@ class ProjectRepository(BaseRepository):
 
     async def create(self, data: CreateProjectSchema) -> Project:
         project_data = data.model_dump()
-        project_data["created_at"] = datetime.now()
+        project_data["created_at"] = datetime.now(timezone.utc)
         project = Project(**project_data)
         self.session.add(project)
         await self.session.commit()
diff --git a/schemas/deal.py b/schemas/deal.py
index ab83de6..aee0fba 100644
--- a/schemas/deal.py
+++ b/schemas/deal.py
@@ -1,3 +1,4 @@
+from datetime import datetime
 from typing import Optional
 
 from schemas.base import BaseSchema, BaseResponse
@@ -11,6 +12,7 @@ class DealSchema(BaseSchema):
     name: str
     lexorank: str
     status_id: int
+    created_at: datetime
 
 
 class CreateDealSchema(BaseSchema):