diff --git a/litellm/proxy/_types.py b/litellm/proxy/_types.py
index 895ca0ea4..d5443bfe4 100644
--- a/litellm/proxy/_types.py
+++ b/litellm/proxy/_types.py
@@ -15,6 +15,13 @@ class LiteLLMBase(BaseModel):
         except:
             # if using pydantic v1
             return self.dict()
+    
+    def fields_set(self):
+        try:
+            return self.model_fields_set # noqa
+        except:
+            # if using pydantic v1
+            return self.__fields_set__ 
 
 
 ######### Request Class Definition ######
diff --git a/litellm/proxy/db/dynamo_db.py b/litellm/proxy/db/dynamo_db.py
index c752d2de5..fec22ea47 100644
--- a/litellm/proxy/db/dynamo_db.py
+++ b/litellm/proxy/db/dynamo_db.py
@@ -128,7 +128,7 @@ class DynamoDBWrapper(CustomDB):
             
 
             actions: List = []
-            for field in data_obj.model_fields_set:
+            for field in data_obj.fields_set():
                 field_value = getattr(data_obj, field)
 
                 # Convert datetime object to ISO8601 string