diff --git a/airflow-core/src/airflow/models/serialized_dag.py b/airflow-core/src/airflow/models/serialized_dag.py
index a019ed6377f45..bd499a1a17953 100644
--- a/airflow-core/src/airflow/models/serialized_dag.py
+++ b/airflow-core/src/airflow/models/serialized_dag.py
@@ -27,9 +27,9 @@
 
 import sqlalchemy_jsonfield
 import uuid6
-from sqlalchemy import ForeignKey, LargeBinary, String, select, tuple_, update
+from sqlalchemy import ForeignKey, LargeBinary, String, exists, select, tuple_, update
 from sqlalchemy.dialects.postgresql import JSONB
-from sqlalchemy.orm import Mapped, backref, foreign, joinedload, relationship
+from sqlalchemy.orm import Mapped, backref, foreign, relationship
 from sqlalchemy.sql.expression import func, literal
 from sqlalchemy_utils import UUIDType
 
@@ -45,6 +45,7 @@
 from airflow.models.dagcode import DagCode
 from airflow.models.dagrun import DagRun
 from airflow.models.deadline_alert import DeadlineAlert as DeadlineAlertModel
+from airflow.models.taskinstance import TaskInstance
 from airflow.serialization.dag_dependency import DagDependency
 from airflow.serialization.definitions.assets import SerializedAssetUniqueKey as UKey
 from airflow.serialization.definitions.deadline import DeadlineAlertFields
@@ -486,7 +487,6 @@ def write_dag(
         dag_version = session.scalar(
             select(DagVersion)
             .where(DagVersion.dag_id == dag.dag_id)
-            .options(joinedload(DagVersion.task_instances))
             .order_by(DagVersion.created_at.desc())
             .limit(1)
         )
@@ -520,7 +520,13 @@ def write_dag(
             log.debug("Serialized DAG (%s) is unchanged. Skipping writing to DB", dag.dag_id)
             return False
 
-        if dag_version and not dag_version.task_instances:
+        has_task_instances: bool = False
+        if dag_version:
+            has_task_instances = bool(
+                session.scalar(select(exists().where(TaskInstance.dag_version_id == dag_version.id)))
+            )
+
+        if dag_version and not has_task_instances:
             # This is for dynamic DAGs that the hashes changes often. We should update
             # the serialized dag, the dag_version and the dag_code instead of a new version
             # if the dag_version is not associated with any task instances