diff --git a/integrations/amazon-security-lake/src/models/ocsf.py b/integrations/amazon-security-lake/src/models/ocsf.py
index ab7dac8555251..63ab7fc7102a5 100644
--- a/integrations/amazon-security-lake/src/models/ocsf.py
+++ b/integrations/amazon-security-lake/src/models/ocsf.py
@@ -75,7 +75,7 @@ class FindingABC(pydantic.BaseModel, abc.ABC):
     class_uid: int
     count: int
     message: str
-    metadata: Metadata
+    metadata: Metadata = Metadata()
     raw_data: str
     resources: typing.List[Resource]
     risk_score: int