diff --git a/metadata-ingestion/scripts/modeldocgen.py b/metadata-ingestion/scripts/modeldocgen.py
index ea7813f0ca85bc..ee5f06cb801baa 100644
--- a/metadata-ingestion/scripts/modeldocgen.py
+++ b/metadata-ingestion/scripts/modeldocgen.py
@@ -8,12 +8,12 @@
 from dataclasses import Field, dataclass, field
 from enum import auto
 from pathlib import Path
-from typing import Any, Dict, List, Optional, Tuple, Iterable
+from typing import Any, Dict, Iterable, List, Optional, Tuple
 
 import avro.schema
 import click
 
-from datahub.configuration.common import ConfigEnum, ConfigModel
+from datahub.configuration.common import ConfigEnum, PermissiveConfigModel
 from datahub.emitter.mce_builder import make_data_platform_urn, make_dataset_urn
 from datahub.emitter.mcp import MetadataChangeProposalWrapper
 from datahub.emitter.rest_emitter import DatahubRestEmitter
@@ -22,7 +22,9 @@
 from datahub.ingestion.extractor.schema_util import avro_schema_to_mce_fields
 from datahub.ingestion.sink.file import FileSink, FileSinkConfig
 from datahub.metadata.schema_classes import (
+    BrowsePathEntryClass,
     BrowsePathsClass,
+    BrowsePathsV2Class,
     DatasetPropertiesClass,
     DatasetSnapshotClass,
     ForeignKeyConstraintClass,
@@ -34,8 +36,6 @@
     StringTypeClass,
     SubTypesClass,
     TagAssociationClass,
-    BrowsePathsV2Class,
-    BrowsePathEntryClass,
 )
 
 logger = logging.getLogger(__name__)
@@ -493,30 +493,29 @@ def strip_types(field_path: str) -> str:
                 ],
             )
 
+
 @dataclass
 class EntityAspectName:
     entityName: str
     aspectName: str
 
 
-@dataclass
-class AspectPluginConfig:
+class AspectPluginConfig(PermissiveConfigModel):
     className: str
     enabled: bool
-    supportedEntityAspectNames: List[EntityAspectName]
+    supportedEntityAspectNames: List[EntityAspectName] = []
     packageScan: Optional[List[str]] = None
     supportedOperations: Optional[List[str]] = None
 
 
-@dataclass
-class PluginConfiguration:
+class PluginConfiguration(PermissiveConfigModel):
     aspectPayloadValidators: Optional[List[AspectPluginConfig]] = None
     mutationHooks: Optional[List[AspectPluginConfig]] = None
     mclSideEffects: Optional[List[AspectPluginConfig]] = None
     mcpSideEffects: Optional[List[AspectPluginConfig]] = None
 
 
-class EntityRegistry(ConfigModel):
+class EntityRegistry(PermissiveConfigModel):
     entities: List[EntityDefinition]
     events: Optional[List[EventDefinition]]
     plugins: Optional[PluginConfiguration] = None