diff --git a/alembic/versions/0063_notification_entity_fields.py b/alembic/versions/0063_notification_entity_fields.py
new file mode 100644
index 0000000..3cc87db
--- /dev/null
+++ b/alembic/versions/0063_notification_entity_fields.py
@@ -0,0 +1,28 @@
+"""Add entity_type and entity_id to notifications table.
+
+Revision ID: 0063
+Revises: 0062
+Create Date: 2026-07-29
+
+The notification model has entity_type and entity_id fields but the DB
+table was never migrated. This causes INSERT failures.
+"""
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects.postgresql import UUID
+
+revision = "0063"
+down_revision = "0062"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("notifications", sa.Column("entity_type", sa.String(50), nullable=True, index=True))
+    op.add_column("notifications", sa.Column("entity_id", UUID(as_uuid=True), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("notifications", "entity_id")
+    op.drop_column("notifications", "entity_type")