diff --git a/airflow/models/dag.py b/airflow/models/dag.py
index 5226855a870b54..9c2124e874207d 100644
--- a/airflow/models/dag.py
+++ b/airflow/models/dag.py
@@ -1513,7 +1513,9 @@ def get_serialized_fields(cls):
                 'parent_dag', '_old_context_manager_dags', 'safe_dag_id', 'last_loaded',
                 '_full_filepath', 'user_defined_filters', 'user_defined_macros',
                 '_schedule_interval', 'partial', '_old_context_manager_dags',
-                '_pickle_id', '_log', 'is_subdag', 'task_dict'
+                '_pickle_id', '_log', 'is_subdag', 'task_dict', 'template_searchpath',
+                'sla_miss_callback', 'on_success_callback', 'on_failure_callback',
+                'template_undefined', 'jinja_environment_kwargs'
             }
         return cls.__serialized_fields
 
diff --git a/airflow/serialization/json_schema.py b/airflow/serialization/json_schema.py
index 7a09b5b8161754..40b44da8dc842c 100644
--- a/airflow/serialization/json_schema.py
+++ b/airflow/serialization/json_schema.py
@@ -50,9 +50,9 @@ def iter_errors(self, instance) -> Iterable[jsonschema.exceptions.ValidationErro
         ...
 
 
-def load_dag_schema() -> Validator:
+def load_dag_schema_dict() -> dict:
     """
-    Load Json Schema for DAG
+    Load & return Json Schema for DAG as Python dict
     """
     schema_file_name = 'schema.json'
     schema_file = pkgutil.get_data(__name__, schema_file_name)
@@ -61,5 +61,13 @@ def load_dag_schema() -> Validator:
         raise AirflowException("Schema file {} does not exists".format(schema_file_name))
 
     schema = json.loads(schema_file.decode())
+    return schema
+
+
+def load_dag_schema() -> Validator:
+    """
+    Load & Validate Json Schema for DAG
+    """
+    schema = load_dag_schema_dict()
     jsonschema.Draft7Validator.check_schema(schema)
     return jsonschema.Draft7Validator(schema)
diff --git a/airflow/serialization/schema.json b/airflow/serialization/schema.json
index 16e14af665e1de..0f15d27a09bb5a 100644
--- a/airflow/serialization/schema.json
+++ b/airflow/serialization/schema.json
@@ -92,7 +92,10 @@
         "start_date": { "$ref": "#/definitions/datetime" },
         "end_date": { "$ref": "#/definitions/datetime" },
         "dagrun_timeout": { "$ref": "#/definitions/timedelta" },
-        "doc_md": { "type" : "string"}
+        "doc_md": { "type" : "string"},
+        "_default_view": { "type" : "string"},
+        "_access_control": {"$ref": "#/definitions/dict" },
+        "is_paused_upon_creation":  { "type": "boolean" }
       },
       "required": [
         "params",
diff --git a/tests/serialization/test_dag_serialization.py b/tests/serialization/test_dag_serialization.py
index b6bba94bc0cd1e..8e8ed2037caeb6 100644
--- a/tests/serialization/test_dag_serialization.py
+++ b/tests/serialization/test_dag_serialization.py
@@ -35,6 +35,7 @@
 from airflow.models.baseoperator import BaseOperator
 from airflow.operators.bash_operator import BashOperator
 from airflow.operators.subdag_operator import SubDagOperator
+from airflow.serialization.json_schema import load_dag_schema_dict
 from airflow.serialization.serialized_objects import SerializedBaseOperator, SerializedDAG
 from tests.test_utils.mock_operators import CustomOperator, CustomOpLink, GoogleLink
 
@@ -53,6 +54,7 @@
             }
         },
         "start_date": 1564617600.0,
+        "is_paused_upon_creation": False,
         "params": {},
         "_dag_id": "simple_dag",
         "fileloc": None,
@@ -107,6 +109,7 @@ def make_simple_dag():
             "depends_on_past": False,
         },
         start_date=datetime(2019, 8, 1),
+        is_paused_upon_creation=False,
     )
     BaseOperator(task_id='simple_task', dag=dag, owner='airflow')
     CustomOperator(task_id='custom_task', dag=dag)
@@ -462,6 +465,18 @@ def test_extra_serialized_field_and_multiple_operator_links(self):
         google_link_from_plugin = simple_task.get_extra_links(test_date, GoogleLink.name)
         self.assertEqual("https://www.google.com", google_link_from_plugin)
 
+    def test_dag_serialized_fields_with_schema(self):
+        """
+        Additional Properties are disabled on DAGs. This test verifies that all the
+        keys in DAG.get_serialized_fields are listed in Schema definition.
+        """
+        dag_schema: dict = load_dag_schema_dict()["definitions"]["dag"]["properties"]
+
+        # The parameters we add manually in Serialization needs to be ignored
+        ignored_keys: set = {"is_subdag", "tasks"}
+        dag_params: set = set(dag_schema.keys()) - ignored_keys
+        self.assertEqual(set(DAG.get_serialized_fields()), dag_params)
+
 
 if __name__ == '__main__':
     unittest.main()