diff --git a/src/hayhooks/server/pipelines/models.py b/src/hayhooks/server/pipelines/models.py
index 8f3d877..816d363 100644
--- a/src/hayhooks/server/pipelines/models.py
+++ b/src/hayhooks/server/pipelines/models.py
@@ -1,6 +1,6 @@
 from typing import get_args, get_origin, List
 
-from pydantic import BaseModel, create_model
+from pydantic import BaseModel, create_model, ConfigDict
 from haystack.dataclasses import Document
 
 
@@ -26,6 +26,8 @@ def get_request_model(pipeline_name: str, pipeline_inputs):
     }
     """
     request_model = {}
+    config = ConfigDict(arbitrary_types_allowed=True)
+
     for component_name, inputs in pipeline_inputs.items():
 
         component_model = {}
@@ -46,7 +48,9 @@ def get_response_model(pipeline_name: str, pipeline_outputs):
     }
     """
     response_model = {}
-    for component_name, outputs in pipe.outputs().items():
+    config = ConfigDict(arbitrary_types_allowed=True)
+
+    for component_name, outputs in pipeline_outputs.items():
         component_model = {}
         for name, typedef in outputs.items():
             output_type = typedef["type"]
diff --git a/src/hayhooks/server/utils/deploy_utils.py b/src/hayhooks/server/utils/deploy_utils.py
index 2e85f2b..eada5e6 100644
--- a/src/hayhooks/server/utils/deploy_utils.py
+++ b/src/hayhooks/server/utils/deploy_utils.py
@@ -1,16 +1,14 @@
 from fastapi import HTTPException
 from fastapi.responses import JSONResponse
-from pydantic import ConfigDict
+
 
 from hayhooks.server.pipelines import registry
 from hayhooks.server.pipelines.models import (
-    HaystackDocument,
     PipelineDefinition,
     get_request_model,
     get_response_model,
     convert_component_output,
 )
-from haystack.dataclasses import Document
 
 
 def deploy_pipeline_def(app, pipeline_def: PipelineDefinition):
@@ -19,8 +17,6 @@ def deploy_pipeline_def(app, pipeline_def: PipelineDefinition):
     except ValueError as e:
         raise HTTPException(status_code=409, detail=f"{e}") from e
 
-    config = ConfigDict(arbitrary_types_allowed=True)
-
     PipelineRunRequest = get_request_model(pipeline_def.name, pipe.inputs())
     PipelineRunResponse = get_response_model(pipeline_def.name, pipe.outputs())