diff --git a/tap_hubspot/streams.py b/tap_hubspot/streams.py
index 96db20c..7b4d03e 100644
--- a/tap_hubspot/streams.py
+++ b/tap_hubspot/streams.py
@@ -98,6 +98,11 @@ def get_child_context(self, record: dict, context: Optional[dict]) -> dict:
         """Return a context dictionary for child streams."""
         return {"archived": record["archived"], "company_id": record["id"]}
 
+    def post_process(self, row: dict, context: Optional[dict]) -> dict:
+        """As needed, append or transform raw data to match expected structure.
+        Returns row"""
+        return row
+
 
 class DealsStream(HubspotStream):
     """Define custom stream."""
@@ -128,6 +133,11 @@ def get_child_context(self, record: dict, context: Optional[dict]) -> dict:
             "deal_id": record["id"],
         }
 
+    def post_process(self, row: dict, context: Optional[dict]) -> dict:
+        """As needed, append or transform raw data to match expected structure.
+        Returns row"""
+        return row
+
 
 class ContactsStream(HubspotStream):
     """Define custom stream."""
@@ -155,6 +165,11 @@ def get_child_context(self, record: dict, context: Optional[dict]) -> dict:
         """Return a context dictionary for child streams."""
         return {"archived": record["archived"], "contact_id": record["id"]}
 
+    def post_process(self, row: dict, context: Optional[dict]) -> dict:
+        """As needed, append or transform raw data to match expected structure.
+        Returns row"""
+        return row
+
 
 class PropertiesStream(HubspotStream):
     """Define custom stream."""