diff --git a/models/deal.py b/models/deal.py
index 17753c4..cc04241 100644
--- a/models/deal.py
+++ b/models/deal.py
@@ -25,7 +25,7 @@ class Deal(BaseModel):
     created_at = Column(DateTime, nullable=False, comment='Дата создания')
     current_status = Column(Integer, nullable=False, comment='Текущий статус')
 
-    client_id = Column(Integer, ForeignKey('clients.id'), nullable=False, comment='ID клиента')
+    client_id = Column(Integer, ForeignKey('clients.id'), nullable=False, comment='ID клиента', cascade='all, delete')
     client = relationship('Client', backref='deals')
 
     status_history = relationship('DealStatusHistory', back_populates='deal', cascade="all, delete-orphan")
diff --git a/models/secondary.py b/models/secondary.py
index a44eae5..6b23905 100644
--- a/models/secondary.py
+++ b/models/secondary.py
@@ -6,7 +6,11 @@ from models.base import metadata, BaseModel
 
 class DealService(BaseModel):
     __tablename__ = 'deal_services'
-    deal_id = Column(Integer, ForeignKey('deals.id'), nullable=False, comment='ID Сделки', primary_key=True)
+    deal_id = Column(Integer, ForeignKey('deals.id'),
+                     nullable=False,
+                     comment='ID Сделки',
+                     primary_key=True,
+                     cascade='all, delete')
     deal = relationship('Deal', back_populates='services')
 
     service_id = Column(Integer, ForeignKey('services.id'), nullable=False, comment='ID Услуги', primary_key=True)
@@ -17,11 +21,16 @@ class DealService(BaseModel):
 
 class DealProduct(BaseModel):
     __tablename__ = 'deal_products'
-    deal_id = Column(Integer, ForeignKey('deals.id'), nullable=False, comment='ID Сделки', primary_key=True)
+    deal_id = Column(Integer,
+                     ForeignKey('deals.id'),
+                     nullable=False,
+                     comment='ID Сделки',
+                     primary_key=True,
+                     cascade='all, delete'
+                     )
     deal = relationship('Deal', back_populates='products')
 
     product_id = Column(Integer, ForeignKey('products.id'), nullable=False, comment='ID Продукта', primary_key=True)
     product = relationship('Product')
 
     quantity = Column(Integer, nullable=False, comment='Кол-во продукта')
-