diff --git a/backend/src/notebookllama/database.py b/backend/src/notebookllama/database.py
index 45d68a5..b2ed622 100644
--- a/backend/src/notebookllama/database.py
+++ b/backend/src/notebookllama/database.py
@@ -72,6 +72,7 @@ class Notebook(Base):
     model_type = Column(String(50), default='openai', nullable=False)  # 'openai' or 'gemini'
     podcast_path = Column(String(500), nullable=True)
     podcast_generated_at = Column(DateTime, nullable=True)
+    synthesis_data = Column(Text, nullable=True)
     created_at = Column(DateTime, default=datetime.utcnow)
     updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)