diff --git a/backend/app/core/database.py b/backend/app/core/database.py
index 45dc8288..c8132156 100644
--- a/backend/app/core/database.py
+++ b/backend/app/core/database.py
@@ -1,6 +1,7 @@
 from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine, async_sessionmaker
 from sqlalchemy.orm import DeclarativeBase
 from .config import settings
+from app.core.tenant_context import register_tenant_listener
 
 # Create async engine
 engine = create_async_engine(
@@ -16,6 +17,11 @@ async_session_maker = async_sessionmaker(
     expire_on_commit=False
 )
 
+# Register the RLS tenant context listener on the app engine.
+# Fires at the start of every transaction; issues set_config automatically.
+# Must NOT be called on admin_engine — admin connections bypass RLS.
+register_tenant_listener(engine)
+
 
 class Base(DeclarativeBase):
     """Base class for all database models."""