diff --git a/backend/app/models/__init__.py b/backend/app/models/__init__.py
index 798792e..91e3b03 100644
--- a/backend/app/models/__init__.py
+++ b/backend/app/models/__init__.py
@@ -8,9 +8,13 @@ from app.models.worker import AIWorker
 from app.models.artifact import Artifact
 from app.models.review import Review
 from app.models.cost import CostLog
+from app.models.alert import Alert
+from app.models.webhook import WebhookConfig
+from app.models.knowledge import KnowledgeDoc
 
 __all__ = [
     "Base", "TimestampMixin", "TenantMixin",
     "Tenant", "User", "Project", "Task",
     "AIWorker", "Artifact", "Review", "CostLog",
+    "Alert", "WebhookConfig", "KnowledgeDoc",
 ]