diff --git a/src/pilgrim/models/photo.py b/src/pilgrim/models/photo.py
index 971cb2a..88fc5a2 100644
--- a/src/pilgrim/models/photo.py
+++ b/src/pilgrim/models/photo.py
@@ -25,7 +25,8 @@ class Photo(Base):
         back_populates="photos"
     )
 
-    fk_travel_diary_id = Column(Integer, ForeignKey("travel_diaries.id"),nullable=False)
+    fk_travel_diary_id = Column(Integer, ForeignKey("travel_diaries.id"), nullable=False)
+    travel_diary = relationship("TravelDiary", back_populates="photos")
     __table_args__ = (
         Index('idx_photo_hash_diary', 'hash', 'fk_travel_diary_id'),
     )
diff --git a/src/pilgrim/models/travel_diary.py b/src/pilgrim/models/travel_diary.py
index 0be4463..90a89b5 100644
--- a/src/pilgrim/models/travel_diary.py
+++ b/src/pilgrim/models/travel_diary.py
@@ -13,6 +13,7 @@ class TravelDiary(Base):
     name = Column(String, nullable=False)
     directory_name = Column(String, nullable=False, unique=True)
     entries = relationship("Entry", back_populates="travel_diary", cascade="all, delete-orphan")
+    photos = relationship("Photo", back_populates="travel_diary", cascade="all, delete-orphan")
 
     __table_args__ = (
         UniqueConstraint('directory_name', name='uq_travel_diary_directory_name'),